x-3x=10-7

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Solution for x-3x=10-7 equation: 


Simplifying
x + -3x = 10 + -7

Combine like terms: x + -3x = -2x
-2x = 10 + -7

Combine like terms: 10 + -7 = 3
-2x = 3

Solving
-2x = 3

Solving for variable 'x'.

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

Divide each side by '-2'.
x = -1.5

Simplifying
x = -1.5

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