4x-12=8x+9

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Solution for 4x-12=8x+9 equation:


Simplifying
4x + -12 = 8x + 9

Reorder the terms:
-12 + 4x = 8x + 9

Reorder the terms:
-12 + 4x = 9 + 8x

Solving
-12 + 4x = 9 + 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.
-12 + 4x + -8x = 9 + 8x + -8x

Combine like terms: 4x + -8x = -4x
-12 + -4x = 9 + 8x + -8x

Combine like terms: 8x + -8x = 0
-12 + -4x = 9 + 0
-12 + -4x = 9

Add '12' to each side of the equation.
-12 + 12 + -4x = 9 + 12

Combine like terms: -12 + 12 = 0
0 + -4x = 9 + 12
-4x = 9 + 12

Combine like terms: 9 + 12 = 21
-4x = 21

Divide each side by '-4'.
x = -5.25

Simplifying
x = -5.25

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