12-4x+8=9+x

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


Simplifying
12 + -4x + 8 = 9 + x

Reorder the terms:
12 + 8 + -4x = 9 + x

Combine like terms: 12 + 8 = 20
20 + -4x = 9 + x

Solving
20 + -4x = 9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
20 + -4x + -1x = 9 + x + -1x

Combine like terms: -4x + -1x = -5x
20 + -5x = 9 + x + -1x

Combine like terms: x + -1x = 0
20 + -5x = 9 + 0
20 + -5x = 9

Add '-20' to each side of the equation.
20 + -20 + -5x = 9 + -20

Combine like terms: 20 + -20 = 0
0 + -5x = 9 + -20
-5x = 9 + -20

Combine like terms: 9 + -20 = -11
-5x = -11

Divide each side by '-5'.
x = 2.2

Simplifying
x = 2.2

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