12x-9=40x+12

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Solution for 12x-9=40x+12 equation:


Simplifying
12x + -9 = 40x + 12

Reorder the terms:
-9 + 12x = 40x + 12

Reorder the terms:
-9 + 12x = 12 + 40x

Solving
-9 + 12x = 12 + 40x

Solving for variable 'x'.

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

Add '-40x' to each side of the equation.
-9 + 12x + -40x = 12 + 40x + -40x

Combine like terms: 12x + -40x = -28x
-9 + -28x = 12 + 40x + -40x

Combine like terms: 40x + -40x = 0
-9 + -28x = 12 + 0
-9 + -28x = 12

Add '9' to each side of the equation.
-9 + 9 + -28x = 12 + 9

Combine like terms: -9 + 9 = 0
0 + -28x = 12 + 9
-28x = 12 + 9

Combine like terms: 12 + 9 = 21
-28x = 21

Divide each side by '-28'.
x = -0.75

Simplifying
x = -0.75

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