12-20=9x+1

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Solution for 12-20=9x+1 equation:


Simplifying
12 + -20 = 9x + 1

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

Reorder the terms:
-8 = 1 + 9x

Solving
-8 = 1 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-8 + -9x = 1 + 9x + -9x

Combine like terms: 9x + -9x = 0
-8 + -9x = 1 + 0
-8 + -9x = 1

Add '8' to each side of the equation.
-8 + 8 + -9x = 1 + 8

Combine like terms: -8 + 8 = 0
0 + -9x = 1 + 8
-9x = 1 + 8

Combine like terms: 1 + 8 = 9
-9x = 9

Divide each side by '-9'.
x = -1

Simplifying
x = -1

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