Answer:
5
Step-by-step explanation:
-6x +10x = 20
4x=20
x=20/4
x=5
Answer:
$390 you divide 520 by 4 so 520/4=130 now we subtract 130 from 520, 520-130=390
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
you're correct
The sum of 5+2 or 2+5 is 7. It's the same because it doesn't matter if the equation is flipped around in addition.