To get x by itself you would add 10 to each side to get x=12 because you do the opposite on the x side to the other side to get x by itself.
Answer:
x=12
Step-by-step explanation:
x−10+10=2+10
store one
Store One:
$720(0.50)=$360
$720-$360=$360
Store Two:
$720(0.30)=$216
$720-$216=$504
$504(0.20)=$100.8
$504-$100.8=$403.2
B
1,3,5