Answer:
(−3x−9)+(4x+8)
=(−3x+4x)+(−9+8)
=x−1
Step-by-step explanation:
x-1
First, solve the like variables. -3x + 4x equals 1x and then -9 + 8= -1. All together it will be 1x-1, get rid of the 1 by dividing 1 into both sides and the answer will finally be x-1
