Question

Select all the expressions that are equal to -1/4 (16-4+8/9x)

Answer 1

A and D

Explanation:

First, we should get the expression in its simplest form:

`(1)/(4)(16-4+(8)/(9)x)\\ (1)/(4)(12+(8)/(9)x)\\ -3-(2)/(9)x`

Since this is the simplest form, A makes sense because -4 + 1 = -3 and -3 - 2/9x is the same as -3 - 2/9x

D is also the same, but -3 is simply at the last term and -2/9x is at the first term.