3x+1y=3.90

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Solution for 3x+1y=3.90 equation: 


Simplifying
3x + 1y = 3.90

Solving
3x + 1y = 3.90

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.
3x + 1y + -1y = 3.90 + -1y

Combine like terms: 1y + -1y = 0
3x + 0 = 3.90 + -1y
3x = 3.90 + -1y

Divide each side by '3'.
x = 1.3 + -0.3333333333y

Simplifying
x = 1.3 + -0.3333333333y

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