Question

Ashton is solving the equation

3x + 7 = 16.
Which shows a step Ashton can
use to solve the equation?
a. 3x + 7 = 16 - 7
b. 3x + 7 - 7 = 16 - 7
c. 3x + 7 = 16 + 7
d. 3x + 7 + 7 = 16 + 7

PLEASE HELP

Answer 1

B: 3x + 7 - 7 = 16 - 7

Explanation:

B: 3x + 7 - 7 = 16 - 7

Answer 2

`\boxed{\sf{B. \quad3x + 7 - 7 = 16 - 7}}`

`\boxed{\sf{x=3}}`

Explanation:

Isolate the term of x from one side of the equation.

3x+7=16

First, subtract by 7 from both sides.

⇒ 3x+7-7=16-7

Solve.

⇒ 16-7=9

Rewrite the problem down.

⇒ 3x=9

Divide by 3 from both sides.

⇒ 3x/3=9/3

Solve.

Divide the numbers from left to right.

⇒ 9/3=3

⇒ x=3

• Therefore, the solution is x=3, which is our answer.

• So, the correct answer is B. 3x+7-7=16-7 (second option).

I hope this helps you! Let me know if my answer is wrong or not.