-64=8(7-x)

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Solution for -64=8(7-x) equation:


Simplifying
-64 = 8(7 + -1x)
-64 = (7 * 8 + -1x * 8)
-64 = (56 + -8x)

Solving
-64 = 56 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
-64 + 8x = 56 + -8x + 8x

Combine like terms: -8x + 8x = 0
-64 + 8x = 56 + 0
-64 + 8x = 56

Add '64' to each side of the equation.
-64 + 64 + 8x = 56 + 64

Combine like terms: -64 + 64 = 0
0 + 8x = 56 + 64
8x = 56 + 64

Combine like terms: 56 + 64 = 120
8x = 120

Divide each side by '8'.
x = 15

Simplifying
x = 15

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