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

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


Simplifying
3x + 5(5x + -7x) = 12 + -1x

Combine like terms: 5x + -7x = -2x
3x + 5(-2x) = 12 + -1x

Remove parenthesis around (-2x)
3x + 5 * -2x = 12 + -1x

Multiply 5 * -2
3x + -10x = 12 + -1x

Combine like terms: 3x + -10x = -7x
-7x = 12 + -1x

Solving
-7x = 12 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-7x + x = 12 + -1x + x

Combine like terms: -7x + x = -6x
-6x = 12 + -1x + x

Combine like terms: -1x + x = 0
-6x = 12 + 0
-6x = 12

Divide each side by '-6'.
x = -2

Simplifying
x = -2

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