21x-24x=9-12

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Solution for 21x-24x=9-12 equation: 


Simplifying
21x + -24x = 9 + -12

Combine like terms: 21x + -24x = -3x
-3x = 9 + -12

Combine like terms: 9 + -12 = -3
-3x = -3

Solving
-3x = -3

Solving for variable 'x'.

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

Divide each side by '-3'.
x = 1

Simplifying
x = 1

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