12x-4x=9+11

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Solution for 12x-4x=9+11 equation: 


Simplifying
12x + -4x = 9 + 11

Combine like terms: 12x + -4x = 8x
8x = 9 + 11

Combine like terms: 9 + 11 = 20
8x = 20

Solving
8x = 20

Solving for variable 'x'.

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

Divide each side by '8'.
x = 2.5

Simplifying
x = 2.5

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