12x-27=8x+21

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Solution for 12x-27=8x+21 equation:


Simplifying
12x + -27 = 8x + 21

Reorder the terms:
-27 + 12x = 8x + 21

Reorder the terms:
-27 + 12x = 21 + 8x

Solving
-27 + 12x = 21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-27 + 12x + -8x = 21 + 8x + -8x

Combine like terms: 12x + -8x = 4x
-27 + 4x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
-27 + 4x = 21 + 0
-27 + 4x = 21

Add '27' to each side of the equation.
-27 + 27 + 4x = 21 + 27

Combine like terms: -27 + 27 = 0
0 + 4x = 21 + 27
4x = 21 + 27

Combine like terms: 21 + 27 = 48
4x = 48

Divide each side by '4'.
x = 12

Simplifying
x = 12

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