-(15-7x)=57

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Solution for -(15-7x)=57 equation: 


Simplifying
-1(15 + -7x) = 57
(15 * -1 + -7x * -1) = 57
(-15 + 7x) = 57

Solving
-15 + 7x = 57

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 7x = 57 + 15

Combine like terms: -15 + 15 = 0
0 + 7x = 57 + 15
7x = 57 + 15

Combine like terms: 57 + 15 = 72
7x = 72

Divide each side by '7'.
x = 10.28571429

Simplifying
x = 10.28571429

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