.45x+.30y=70

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Solution for .45x+.30y=70 equation: 


Simplifying
0.45x + 0.30y = 70

Solving
0.45x + 0.30y = 70

Solving for variable 'x'.

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

Add '-0.30y' to each side of the equation.
0.45x + 0.30y + -0.30y = 70 + -0.30y

Combine like terms: 0.30y + -0.30y = 0.00
0.45x + 0.00 = 70 + -0.30y
0.45x = 70 + -0.30y

Divide each side by '0.45'.
x = 155.5555556 + -0.6666666667y

Simplifying
x = 155.5555556 + -0.6666666667y

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