20x+5y=4.21

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Solution for 20x+5y=4.21 equation: 


Simplifying
20x + 5y = 4.21

Solving
20x + 5y = 4.21

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.
20x + 5y + -5y = 4.21 + -5y

Combine like terms: 5y + -5y = 0
20x + 0 = 4.21 + -5y
20x = 4.21 + -5y

Divide each side by '20'.
x = 0.2105 + -0.25y

Simplifying
x = 0.2105 + -0.25y

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