12x-6=5x+15

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Solution for 12x-6=5x+15 equation:


Simplifying
12x + -6 = 5x + 15

Reorder the terms:
-6 + 12x = 5x + 15

Reorder the terms:
-6 + 12x = 15 + 5x

Solving
-6 + 12x = 15 + 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.
-6 + 12x + -5x = 15 + 5x + -5x

Combine like terms: 12x + -5x = 7x
-6 + 7x = 15 + 5x + -5x

Combine like terms: 5x + -5x = 0
-6 + 7x = 15 + 0
-6 + 7x = 15

Add '6' to each side of the equation.
-6 + 6 + 7x = 15 + 6

Combine like terms: -6 + 6 = 0
0 + 7x = 15 + 6
7x = 15 + 6

Combine like terms: 15 + 6 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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