-3(-9+7x)=-57

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Solution for -3(-9+7x)=-57 equation: 


Simplifying
-3(-9 + 7x) = -57
(-9 * -3 + 7x * -3) = -57
(27 + -21x) = -57

Solving
27 + -21x = -57

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -21x = -57 + -27

Combine like terms: 27 + -27 = 0
0 + -21x = -57 + -27
-21x = -57 + -27

Combine like terms: -57 + -27 = -84
-21x = -84

Divide each side by '-21'.
x = 4

Simplifying
x = 4

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