Question

Darren and Quincy wanted to justify that the expression 1/6 (6×+12)-1/2(4x+2) is equivalent to -x+1. Their justifications are shiwn below.

Answer 1

Option C is correct!

Explanation:

Both are correct because after substituting the same value into both expressions, the result is the same.

Answer 2

Not Justified

Explanation:

Equation Given:

`(1)/(6)  (6x+12) - (1)/(2)  (4x+2) \\\\\\>(1)/(6) *6(x+2) - (1)/(2) *2(2x+1)\\\\> x+2 - 2x +1 \\\\> -x+3`

The solved equation is not the same as -x+1, hence it cannot be justified.