-21X-217=-12X-136

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Solution for -21X-217=-12X-136 equation:


Simplifying
-21X + -217 = -12X + -136

Reorder the terms:
-217 + -21X = -12X + -136

Reorder the terms:
-217 + -21X = -136 + -12X

Solving
-217 + -21X = -136 + -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.
-217 + -21X + 12X = -136 + -12X + 12X

Combine like terms: -21X + 12X = -9X
-217 + -9X = -136 + -12X + 12X

Combine like terms: -12X + 12X = 0
-217 + -9X = -136 + 0
-217 + -9X = -136

Add '217' to each side of the equation.
-217 + 217 + -9X = -136 + 217

Combine like terms: -217 + 217 = 0
0 + -9X = -136 + 217
-9X = -136 + 217

Combine like terms: -136 + 217 = 81
-9X = 81

Divide each side by '-9'.
X = -9

Simplifying
X = -9

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