12+8-9=2x+2x-12-1

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Solution for 12+8-9=2x+2x-12-1 equation: 


Simplifying
12 + 8 + -9 = 2x + 2x + -12 + -1

Combine like terms: 12 + 8 = 20
20 + -9 = 2x + 2x + -12 + -1

Combine like terms: 20 + -9 = 11
11 = 2x + 2x + -12 + -1

Reorder the terms:
11 = -12 + -1 + 2x + 2x

Combine like terms: -12 + -1 = -13
11 = -13 + 2x + 2x

Combine like terms: 2x + 2x = 4x
11 = -13 + 4x

Solving
11 = -13 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
11 + -4x = -13 + 4x + -4x

Combine like terms: 4x + -4x = 0
11 + -4x = -13 + 0
11 + -4x = -13

Add '-11' to each side of the equation.
11 + -11 + -4x = -13 + -11

Combine like terms: 11 + -11 = 0
0 + -4x = -13 + -11
-4x = -13 + -11

Combine like terms: -13 + -11 = -24
-4x = -24

Divide each side by '-4'.
x = 6

Simplifying
x = 6

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