12x=15+7x

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Solution for 12x=15+7x equation: 


Simplifying
12x = 15 + 7x

Solving
12x = 15 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
12x + -7x = 15 + 7x + -7x

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

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

Divide each side by '5'.
x = 3

Simplifying
x = 3

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