3x+3(5x-7x)=-12

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Solution for 3x+3(5x-7x)=-12 equation: 


Simplifying
3x + 3(5x + -7x) = -12

Combine like terms: 5x + -7x = -2x
3x + 3(-2x) = -12

Remove parenthesis around (-2x)
3x + 3 * -2x = -12

Multiply 3 * -2
3x + -6x = -12

Combine like terms: 3x + -6x = -3x
-3x = -12

Solving
-3x = -12

Solving for variable 'x'.

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

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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