2x+1y=90

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Solution for 2x+1y=90 equation: 


Simplifying
2x + 1y = 90

Solving
2x + 1y = 90

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 + 1y + -1y = 90 + -1y

Combine like terms: 1y + -1y = 0
2x + 0 = 90 + -1y
2x = 90 + -1y

Divide each side by '2'.
x = 45 + -0.5y

Simplifying
x = 45 + -0.5y

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