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

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


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

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

Multiply -1 * -7
-2x = -12 + 7

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

Solving
-2x = -5

Solving for variable 'x'.

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

Divide each side by '-2'.
x = 2.5

Simplifying
x = 2.5

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