Which expression is equivalent to the expression below?

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

3x+3y-z-7

Step-by-step 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)