-x+3x=-7

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Solution for -x+3x=-7 equation: 


Simplifying
-1x + 3x = -7

Combine like terms: -1x + 3x = 2x
2x = -7

Solving
2x = -7

Solving for variable 'x'.

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

Divide each side by '2'.
x = -3.5

Simplifying
x = -3.5

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