1x-3x=4-12

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Solution for 1x-3x=4-12 equation: 


Simplifying
1x + -3x = 4 + -12

Combine like terms: 1x + -3x = -2x
-2x = 4 + -12

Combine like terms: 4 + -12 = -8
-2x = -8

Solving
-2x = -8

Solving for variable 'x'.

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

Divide each side by '-2'.
x = 4

Simplifying
x = 4

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