15=2x+x

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Solution for 15=2x+x equation: 


Simplifying
15 = 2x + x

Combine like terms: 2x + x = 3x
15 = 3x

Solving
15 = 3x

Solving for variable 'x'.

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

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

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

Add '-15' to each side of the equation.
15 + -15 + -3x = 0 + -15

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

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

Divide each side by '-3'.
x = 5

Simplifying
x = 5

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