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
Firdavs [7]
3 years ago
11

3-x=5x+21

Mathematics
2 answers:
mars1129 [50]3 years ago
7 0

Answer:

x = - 3

Step-by-step explanation:

3 - x = 5x + 21

- x + 3 = 5x + 21

(- x + 3) + (- 3 - 5x) = (5x + 21) + (- 3 - 5x)

(- x + 3) + (- 5x - 3) = (5x + 21) + (- 5x - 3)

- x + 3 - 5x - 3 = 5x + 21 - 5x - 3

- x - 5x + 3 - 3 = 5x - 5x + 21 - 3

- 6x = 18

x = - 18/6

x = - 3

vlada-n [284]3 years ago
3 0

Answer:

<h3>\boxed{ \sf{ \bold{- 3}}}</h3>

Step-by-step explanation:

\sf{3 - x = 5x + 21}

Move 5x to left hand side and change it's sign

⇒\sf{  - x - 5x  + 3 = 21}

Move 3 to right hand side and change it's sign

⇒\sf{ - x - 5x = 21 - 3}

Collect like terms

⇒\sf{ - 6x = 21 - 3}

Subtract 3 from 21

⇒\sf{ - 6x = 18}

Divide both sides of the equation by -6

⇒\sf{ \frac{ - 6x}{ - 6}  =  \frac{18}{-6}}

Calculate

⇒\sf{x  = -3}

Hope I helped!

Best regards!!

You might be interested in
One restaurant offers two large pizzas for the same price as two medium pizzas and a $6 pitcher of drinks. The medium pizza cost
STALIN [3.7K]
A large pizza costs $6
3 0
3 years ago
Could someone help me please if you don’t mind thank you so much!
Marina86 [1]

Answer:

m = 11

Step-by-step explanation:

Given

\frac{2}{5} (m + 4) = 6 ← multiply both sides by 5 to clear the fraction

2(m + 4) = 30 ( divide both sides by 2 )

m + 4 = 15 ( subtract 4 from both sides )

m = 11

This method avoids having to deal with awkward fractions

6 0
3 years ago
Simplify each expression Justify each step
Andrei [34K]
Answers
remove the ( ) fast and then add the numbers that look the same.
(22+19b)+7
22+19b+7
22+7+19b
= 29+19b

18+(5+6m)
18+5+6m
= 23+6m

here u don't care about same or not same u just multiply or divide
11s(4)
= 44s

10y(7)
= 70y

(9+31+5)(7times5)times4)
(45)(35)4
(1575)4
= 6300
8 0
3 years ago
two planes travel a constant speed. plane A travels 2.800 miles in 5 hours plane B travels 3.885 miles in 7 hours. which plane i
vfiekz [6]
Plane a is faster

Have a good day!!!
3 0
3 years ago
Which of the following statements are true about the diagram ? Please choose correct answers !!!!! Will mark Brianliest !!!!!!!!
Luden [163]

Answer:

It's none of the above

Step-by-step explanation:

GK is //

Both G & K are most definitely not the midpoints

G not the vertex of the right angle

5 0
2 years ago
Other questions:
  • A parking lot charges $3 to park a car for the first hour and $2 per hour after that. If you use more than one parking space, th
    8·1 answer
  • What are the opposites of 3, 7.5 and -2 2/3?
    6·1 answer
  • Solve the equation using square roots. X^2+16=0
    5·2 answers
  • What is the range of the data below? A box-and-whisker plot. The number line goes from 50 to 100. The whiskers range from 52 to
    13·1 answer
  • How to solve x^2-7=-x^2+1
    15·1 answer
  • Which would have an answer equal to the product of 9 and 8
    13·1 answer
  • Andrea rode her bike 3 23rds miles on saterday and 4 56 miles on sunday. how far did she bike in all​
    9·1 answer
  • PLEASE HELP LAST QUESTION
    9·1 answer
  • Nancy wants to buy some granola, which she eats for breakfast almost every day. Which is likely the most cost-effective option?
    9·1 answer
  • Fill in the blank. In the triangle below, x= Round your answer to two<br> decimal places.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!