15=x+4x

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Solution for 15=x+4x equation:


Simplifying
15 = x + 4x

Combine like terms: x + 4x = 5x
15 = 5x

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

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

Add '-15' to each side of the equation.
15 + -15 + -5x = 0 + -15

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

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

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

Simplifying
x = 3

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