2.5x+y=20

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Solution for 2.5x+y=20 equation: 


Simplifying
2.5x + y = 20

Solving
2.5x + y = 20

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.
2.5x + y + -1y = 20 + -1y

Combine like terms: y + -1y = 0
2.5x + 0 = 20 + -1y
2.5x = 20 + -1y

Divide each side by '2.5'.
x = 8 + -0.4y

Simplifying
x = 8 + -0.4y

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