3x-(7x-x)=13

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Solution for 3x-(7x-x)=13 equation: 


Simplifying
3x + -1(7x + -1x) = 13

Combine like terms: 7x + -1x = 6x
3x + -1(6x) = 13

Remove parenthesis around (6x)
3x + -1 * 6x = 13

Multiply -1 * 6
3x + -6x = 13

Combine like terms: 3x + -6x = -3x
-3x = 13

Solving
-3x = 13

Solving for variable 'x'.

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

Divide each side by '-3'.
x = -4.333333333

Simplifying
x = -4.333333333

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