Answer:
-2x + 3
Step-by-step explanation:
(x+7) - (3x+4)
Since there is a negative outside the 3x + 4, multiply both numbers by -1. Afterwards, you can't combine anything in the parentheses, so just ignore them.
New expression set up:
x + 7 - 3x - 4
Combine like terms:
x - 3x = -2x
7 - 4 = 3
Answer:
-2x + 3
