4x-9x=8+12

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Solution for 4x-9x=8+12 equation: 


Simplifying
4x + -9x = 8 + 12

Combine like terms: 4x + -9x = -5x
-5x = 8 + 12

Combine like terms: 8 + 12 = 20
-5x = 20

Solving
-5x = 20

Solving for variable 'x'.

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

Divide each side by '-5'.
x = -4

Simplifying
x = -4

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