9x-80=172-12x

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Solution for 9x-80=172-12x equation:


Simplifying
9x + -80 = 172 + -12x

Reorder the terms:
-80 + 9x = 172 + -12x

Solving
-80 + 9x = 172 + -12x

Solving for variable 'x'.

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

Add '12x' to each side of the equation.
-80 + 9x + 12x = 172 + -12x + 12x

Combine like terms: 9x + 12x = 21x
-80 + 21x = 172 + -12x + 12x

Combine like terms: -12x + 12x = 0
-80 + 21x = 172 + 0
-80 + 21x = 172

Add '80' to each side of the equation.
-80 + 80 + 21x = 172 + 80

Combine like terms: -80 + 80 = 0
0 + 21x = 172 + 80
21x = 172 + 80

Combine like terms: 172 + 80 = 252
21x = 252

Divide each side by '21'.
x = 12

Simplifying
x = 12

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