8x-12=5x+21

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Solution for 8x-12=5x+21 equation:


Simplifying
8x + -12 = 5x + 21

Reorder the terms:
-12 + 8x = 5x + 21

Reorder the terms:
-12 + 8x = 21 + 5x

Solving
-12 + 8x = 21 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-12 + 8x + -5x = 21 + 5x + -5x

Combine like terms: 8x + -5x = 3x
-12 + 3x = 21 + 5x + -5x

Combine like terms: 5x + -5x = 0
-12 + 3x = 21 + 0
-12 + 3x = 21

Add '12' to each side of the equation.
-12 + 12 + 3x = 21 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = 21 + 12
3x = 21 + 12

Combine like terms: 21 + 12 = 33
3x = 33

Divide each side by '3'.
x = 11

Simplifying
x = 11

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