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

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


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

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

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

Solving
1x = 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.
1x + x = 12 + -1x + x

Combine like terms: 1x + x = 2x
2x = 12 + -1x + x

Combine like terms: -1x + x = 0
2x = 12 + 0
2x = 12

Divide each side by '2'.
x = 6

Simplifying
x = 6

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