-12=5x-9x-20

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Solution for -12=5x-9x-20 equation:


Simplifying
-12 = 5x + -9x + -20

Reorder the terms:
-12 = -20 + 5x + -9x

Combine like terms: 5x + -9x = -4x
-12 = -20 + -4x

Solving
-12 = -20 + -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.
-12 + 4x = -20 + -4x + 4x

Combine like terms: -4x + 4x = 0
-12 + 4x = -20 + 0
-12 + 4x = -20

Add '12' to each side of the equation.
-12 + 12 + 4x = -20 + 12

Combine like terms: -12 + 12 = 0
0 + 4x = -20 + 12
4x = -20 + 12

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

Divide each side by '4'.
x = -2

Simplifying
x = -2

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