1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nydimaria [60]
3 years ago
15

How can you solve an equation with a variable on ni tu sides?​

Mathematics
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

  Subtract from both sides of the equation the term you don't want

Step-by-step explanation:

In solving equations, you generally want to "undo" operations that are done to the variable. Addition is "undone" by adding the opposite (that is, subtracting the amount that was added). Multiplication is "undone" by division.

If you have variables on both sides of the equation, pick one of the variable terms and subtract it from both sides of the equation.

<u>Example</u>

  2x = x +1

If we choose to subtract x, then we will have a variable term on the left and a  constant term on the right:

  2x -x = x -x +1 . . . . . . . x is subtracted from both sides

  x = 1 . . . . . . simplify

__

Note that we purposely set up this example so that removing the variable term from the right side caused the variable term and constant term to be on opposite sides of the equal sign. It may not always be that way. As long as you remember that an unwanted term can be removed by subtracting it (from both sides of the equation), you can deal with constant terms and variable terms no matter where they appear.

_____

<em>Additional Comment</em>

It usually works well to choose the variable term with the smallest (or most negative) coefficient. That way, when you subtract it, you will be left with a variable term that has a positive coefficient.

You might be interested in
The Jones family is considering which one of two businesses will mow their
Natalka [10]

Answer:

Lon's Lawns

Step-by-step explanation:

32X9=288

25X10+50=300

4 0
2 years ago
What x value solves this equation? 3x-5=1
horrorfan [7]

Answer:

x=2

Step-by-step explanation:

Add 5 to each side.

3x-5+5=1+5

3x=6

Divide each side by 3.

Your answer would be x=2.

3 0
3 years ago
Read 2 more answers
4r+8+5=-15-3r ANSWER NUMBER FORM NO WORDS AT ALL
wolverine [178]

Answer:

r = -4

Step-by-step explanation:

Step 1: Write out equation

4r + 8 + 5 = -15 - 3r

Step 2: Combine like terms

4r + 13 = -15 - 3r

Step 3: Add 3r to both sides

7r + 13 = -15

Step 4: Subtract 13 on both sides

7r = -28

Step 5: Divide both sides by 7

r = -4

7 0
3 years ago
Read 2 more answers
Danielle and Drew are sightseeing for the day. Between the two of them they take 77 pictures. Danielle takes 17 more than twice
Alex Ar [27]
Let's break this down:
Total Pictures = 77
Drew's Pictures = X (An unknown amount)
Danielle's Pictures = 17 + 2X (2 times the amount of Drew plus 17)

So, let's put the pieces together, the problem should look like this:
   Total Pictures = Drew's Pictures + Danielle's Pictures

So let's put in what we know:
   77 = X + (17 + 2X)

1st step is to get X to one side:
   77 = X + 17 + 2X
   -17       - 17
=> 60 = X + 2X
=> 60 = 3X

Now that X is on one side, the 2nd step is to get X to be alone:
   60/3 = 3X/3  (We have to divide to each side because the answer is equal)
   20 = X

So, now that we know what X equals, let's go back to what we broke down:
Drew's Pictures = X (An unknown amount)
Danielle's Pictures = 17 + 2X (2 times the amount of Drew plus 17)

*Remember that X = 20*
So the amount of Drew's Pictures (since the amount is equal to X) is 20.

Danielle had 17 + 2X pictures which means:
17 + 2(20)
17 + 40
57

So Danielle took 57 pictures
7 0
3 years ago
Is A = 4b proportional
maria [59]

Answer:

Yes, it is proportional.

Step-by-step explanation:

Anything with "A =" is always going to be proportional.

6 0
3 years ago
Read 2 more answers
Other questions:
  • How many times can 10go in to 2,135,468
    12·1 answer
  • What is the slope of a line that passes through 2,-8 and -2,2
    5·1 answer
  • Answer the question plz help
    11·2 answers
  • Worth 50 points what is 9+10
    8·2 answers
  • X= helppppp pleaseeeeeeeeeeeee
    11·1 answer
  • Amy is considering visiting her new friend at one of his beach houses in Florida. She really loves the
    14·2 answers
  • Help plz
    10·1 answer
  • 1. What is the square root of 225?*<br> o<br> 15<br> 12<br> 112.5<br> 450
    11·2 answers
  • Pls help bro plsss pls pls
    13·2 answers
  • If I run 6 m/s I can finish a lap of a track in 4 minutes. If I run at 12 m/s, how long will it now take?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!