X*2+y=80

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Solution for X*2+y=80 equation: 


Simplifying
X * 2 + y = 80

Reorder the terms for easier multiplication:
2X + y = 80

Solving
2X + y = 80

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 = 80 + -1y

Combine like terms: y + -1y = 0
2X + 0 = 80 + -1y
2X = 80 + -1y

Divide each side by '2'.
X = 40 + -0.5y

Simplifying
X = 40 + -0.5y

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