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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