Question

Maricella solves for x in the equation 4 x minus 2 (3 x minus 4) + 4 = negative x + 3 (x + 1) + 1. She begins by adding –4 + 4 on the left side of the equation and 1 + 1 on the right side of the equation. Which best explains why Maricella's strategy is incorrect?

Answer 1

4

Explanation:

Answer 2

Explanation:

Given the equation

4x-2(3x-4)+4 = -x+3(x+1)+1

Open the parenthesis on both sides

4x-6x+8+4 = -x+3x+3+1

-2x+12 = 2x+4

Collect like terms

-2x-2x = 4-12

-4x = -8

Divide both sides by -4

-4x/-4 = -8/-4

x = 2

Hence the value of x is 2