Math (Grade 9)
posted by Maddison on .
Solving Linear Equations:
x
_  3 = 5
7
I know you have to add three to each side, but after that im not sure what to do,, please help!

x/7 = 8
Multiply both sides by 7.
x = 56 
I don't understand how x/7 is 8 because how do you know what x is ???

(x/7)  3 = 5
Add 3 to both sides.
x/7 = 8
Multiply both sides by 7.
(x/7) * 7 = 8 * 7
x = 56
Proof:
(56/7)  3 = 5
8  3 = 5