7x-10x=-9-12

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Solution for 7x-10x=-9-12 equation: 


Simplifying
7x + -10x = -9 + -12

Combine like terms: 7x + -10x = -3x
-3x = -9 + -12

Combine like terms: -9 + -12 = -21
-3x = -21

Solving
-3x = -21

Solving for variable 'x'.

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

Divide each side by '-3'.
x = 7

Simplifying
x = 7

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