Question

Which expression is equivalent to the expression below?

(4x + 2y - z) - (x - y + 7)

Answer 1

3x+3y−z−7

i took the test

Explanation:

Answer 2

3x+3y−z−7

Explanation:

"Let's simplify step-by-step.

4x+2y−z−(x−y+7)

Distribute the Negative Sign:

=4x+2y−z+−1(x−y+7)

=4x+2y+−z+−1x+−1(−y)+(−1)(7)

=4x+2y+−z+−x+y+−7

Combine Like Terms:

=4x+2y+−z+−x+y+−7

=(4x+−x)+(2y+y)+(−z)+(−7)"(Mathpapa)