.5x+.4y=520

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Solution for .5x+.4y=520 equation: 


Simplifying
0.5x + 0.4y = 520

Solving
0.5x + 0.4y = 520

Solving for variable 'x'.

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

Add '-0.4y' to each side of the equation.
0.5x + 0.4y + -0.4y = 520 + -0.4y

Combine like terms: 0.4y + -0.4y = 0.0
0.5x + 0.0 = 520 + -0.4y
0.5x = 520 + -0.4y

Divide each side by '0.5'.
x = 1040 + -0.8y

Simplifying
x = 1040 + -0.8y

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