Question

3x + x + x + x − 3 − 2 = 7 + x + x In the equation above, what is the value of x? A) −5 7 B) 1 C) 12 7 D) 3

Answer 1

x=3

Explanation:

3x + x + x + x − 3 − 2 = 7 + x + x

Combine like terms

6x -5 = 7+2x

subtract 2x from each side

6x-2x -5 = 7+2x-2x

4x -5 = 7

Add 5 to each side

4x-5 +5 = 7+5

4x =12

Divide by 4

4x/4 =12/4

x=3