x+x+y=40

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Solution for x+x+y=40 equation: 


Simplifying
x + x + y = 40

Combine like terms: x + x = 2x
2x + y = 40

Solving
2x + y = 40

Solving for variable 'x'.

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

Add '-1y' to each side of the equation.
2x + y + -1y = 40 + -1y

Combine like terms: y + -1y = 0
2x + 0 = 40 + -1y
2x = 40 + -1y

Divide each side by '2'.
x = 20 + -0.5y

Simplifying
x = 20 + -0.5y

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