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Simplifying
x + 7x = 56 + 8

Combine like terms: x + 7x = 8x
8x = 56 + 8

Combine like terms: 56 + 8 = 64
8x = 64

Solving
8x = 64

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '8'.
x = 8

Simplifying
x = 8
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