-3x+5y=80

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Solution for -3x+5y=80 equation: 


Simplifying
-3x + 5y = 80

Solving
-3x + 5y = 80

Solving for variable 'x'.

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

Add '-5y' to each side of the equation.
-3x + 5y + -5y = 80 + -5y

Combine like terms: 5y + -5y = 0
-3x + 0 = 80 + -5y
-3x = 80 + -5y

Divide each side by '-3'.
x = -26.66666667 + 1.666666667y

Simplifying
x = -26.66666667 + 1.666666667y

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