15=5x+7x+3

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Solution for 15=5x+7x+3 equation: 


Simplifying
15 = 5x + 7x + 3

Reorder the terms:
15 = 3 + 5x + 7x

Combine like terms: 5x + 7x = 12x
15 = 3 + 12x

Solving
15 = 3 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
15 + -12x = 3 + 12x + -12x

Combine like terms: 12x + -12x = 0
15 + -12x = 3 + 0
15 + -12x = 3

Add '-15' to each side of the equation.
15 + -15 + -12x = 3 + -15

Combine like terms: 15 + -15 = 0
0 + -12x = 3 + -15
-12x = 3 + -15

Combine like terms: 3 + -15 = -12
-12x = -12

Divide each side by '-12'.
x = 1

Simplifying
x = 1

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