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Solving Linear Equations:

x
_ - 3 = 5

7

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

x/7 = 8

Multiply both sides by 7.

(x/7) * 7 = 8 * 7
x = 56

Proof:

(56/7) - 3 = 5
8 - 3 = 5

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