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

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


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

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

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

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

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

Solving
-3x = 12 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-3x + -1x = 12 + x + -1x

Combine like terms: -3x + -1x = -4x
-4x = 12 + x + -1x

Combine like terms: x + -1x = 0
-4x = 12 + 0
-4x = 12

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

Simplifying
x = -3

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