x+x+y=30

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Solution for x+x+y=30 equation: 


Simplifying
x + x + y = 30

Combine like terms: x + x = 2x
2x + y = 30

Solving
2x + y = 30

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 = 30 + -1y

Combine like terms: y + -1y = 0
2x + 0 = 30 + -1y
2x = 30 + -1y

Divide each side by '2'.
x = 15 + -0.5y

Simplifying
x = 15 + -0.5y

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