Answer:
-1
Step-by-step explanation:
-2/3 - 1/3
Since the denominators are the same, we can combine the numerators
-3/3
Simplify
22.5
x+3x=90
4x=90
x=90/4
x=22.5
Yes, x=3
Step 1. Subtract 2x from each side
5x=2x+9
-2x -2x
Step 2. Divide both sides by 3
3x/3=9/3
x = 3
x=5
I hope that it helps you..
