Question

For each expression, write an equivalent expression that uses only addition.

20−9+8−7
4x−7y−5z+6
-3x−8y−4−87z

Answer 1

1) 28 - 16 = 12

2) 4x + 6 -7y -5z

3) -3x -8y - 4 - 87z

These were all mostly simplified already.

Hope this helps!