This is Commutative property of addition
Answer:
5 2/3
Step-by-step explanation:
15 ÷ 3 = 5.
with 2 leftover, you will have 2/3
5 + 2/3 = 5 2/3
<em>Good Luck!</em>
<em>-kiniwih426</em>
Isolate the variable
10x - 7x = -20 - 8
3x = -28
x = -9.333333333333