8x-21=12x-85

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Solution for 8x-21=12x-85 equation:


Simplifying
8x + -21 = 12x + -85

Reorder the terms:
-21 + 8x = 12x + -85

Reorder the terms:
-21 + 8x = -85 + 12x

Solving
-21 + 8x = -85 + 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.
-21 + 8x + -12x = -85 + 12x + -12x

Combine like terms: 8x + -12x = -4x
-21 + -4x = -85 + 12x + -12x

Combine like terms: 12x + -12x = 0
-21 + -4x = -85 + 0
-21 + -4x = -85

Add '21' to each side of the equation.
-21 + 21 + -4x = -85 + 21

Combine like terms: -21 + 21 = 0
0 + -4x = -85 + 21
-4x = -85 + 21

Combine like terms: -85 + 21 = -64
-4x = -64

Divide each side by '-4'.
x = 16

Simplifying
x = 16

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