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
olga55 [171]
3 years ago
12

5. (01.07) Solve 3x - x + 2 = 12. (1 point)

Mathematics
2 answers:
mafiozo [28]3 years ago
7 0

Answer:

x = 5

Step-by-step explanation:

Simplify. First, combine like terms:

3x - x + 2 = 12

(3x - x) + 2 = 12

(2x) + 2 = 12

2x + 2 = 12

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS =

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

& is your order of operation.

First, subtract 2 from both sides:

2x + 2 (-2) = 12 (-2)

2x = 12 - 2

2x = 10

Next, divide 2 from both sides:

(2x)/2 = (10)/2

x = 10/2

x = 5

5 is your answer for x.

Check: Plug in 5 for x in the equation. Solve:

3(5) - (5) + 2 = 12

15 - 5 + 2 = 12

10 + 2 = 12

12 = 12 (True)

~

Gnom [1K]3 years ago
7 0

Answer:

x = 5

Step-by-step explanation:

Combining like terms, we get 2x = 10.  Dividing both sides by 2 yields

x = 5

You might be interested in
How can you use a number line to compare and order numbers?
miskamm [114]
The numbers going to the left on a number line means the values are smaller and the numbers going to the right means the values are bigger. 

Take the value '0' for example, the value on the right of zero is '1', which is a value bigger than zero, and the value to the left of '0' is '-1', which is a value smaller than zero.

8 0
4 years ago
The number 6 is a solution to which of the following inequalities?
Paladinen [302]

Answer:

21 + x < 28

Step-by-step explanation:

27 is in fact greater than 28 if you where to input 6 into the x spot, this is the only one that's a true expression.

8 0
3 years ago
This is not a question, this is for who-ever needs it.
Eddi Din [679]

Answer:

thank you so much!

Step-by-step explanation:

5 0
3 years ago
Sally has 13 baseball cards in each week her grandpa bring 7 more sally created this equation y=7x +13 use the equation to answe
fiasKO [112]

Answer:

13 means the starting number

13 is the y-intercept (0,13)

5 0
3 years ago
For Emily's birthday, her father treated her and five friends to a dinner at a restaurant at the mall. Emily and her friends ord
erma4kov [3.2K]

Answer:

$58.26.

Step-by-step explanation:

Total cost without sales tax and tip =  3 * 6.25 + 3 * 7.50 + 6 *1.25

= $48.75

Plus Sales tax and tip:

= 48.75 + 0.045*48.74 + 0.15*48.75

= $58.26.

5 0
3 years ago
Other questions:
  • Which of the following is used to determine the significance of predictions made by a best fitting linear equation?A. correlatio
    5·1 answer
  • I need help asap please I will give branlist
    15·1 answer
  • Jamie got a new part-time job. The company offers him a salary of $300 per
    6·1 answer
  • A student uses the ratio of 4 oranges to 6 fluid ounces to find the number of oranges needed to make 24 fluid ounces of juice. T
    10·2 answers
  • These diagrams represent:
    5·1 answer
  • A $65 meal is put on the table. The couple plans on leaving an 18% tip. How much should be left altogether?
    7·1 answer
  • If 60% of the students in your class like Burger King, how many students are in your class if 15 students like Burger King?
    5·1 answer
  • I just need the answers, u dont have to show ur work if u dont want
    6·1 answer
  • If you give me the right answer the points are yours
    15·2 answers
  • What are the answers to these? im doing piecewise functions?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!