15+4x=40-x

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Solution for 15+4x=40-x equation:


Simplifying
15 + 4x = 40 + -1x

Solving
15 + 4x = 40 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
15 + 4x + x = 40 + -1x + x

Combine like terms: 4x + x = 5x
15 + 5x = 40 + -1x + x

Combine like terms: -1x + x = 0
15 + 5x = 40 + 0
15 + 5x = 40

Add '-15' to each side of the equation.
15 + -15 + 5x = 40 + -15

Combine like terms: 15 + -15 = 0
0 + 5x = 40 + -15
5x = 40 + -15

Combine like terms: 40 + -15 = 25
5x = 25

Divide each side by '5'.
x = 5

Simplifying
x = 5

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