.04y+0.15(800-y)=.39y

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Solution for .04y+0.15(800-y)=.39y equation:


Simplifying
0.04y + 0.15(800 + -1y) = 0.39y
0.04y + (800 * 0.15 + -1y * 0.15) = 0.39y
0.04y + (120 + -0.15y) = 0.39y

Reorder the terms:
120 + 0.04y + -0.15y = 0.39y

Combine like terms: 0.04y + -0.15y = -0.11y
120 + -0.11y = 0.39y

Solving
120 + -0.11y = 0.39y

Solving for variable 'y'.

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

Add '-0.39y' to each side of the equation.
120 + -0.11y + -0.39y = 0.39y + -0.39y

Combine like terms: -0.11y + -0.39y = -0.5y
120 + -0.5y = 0.39y + -0.39y

Combine like terms: 0.39y + -0.39y = 0.00
120 + -0.5y = 0.00

Add '-120' to each side of the equation.
120 + -120 + -0.5y = 0.00 + -120

Combine like terms: 120 + -120 = 0
0 + -0.5y = 0.00 + -120
-0.5y = 0.00 + -120

Combine like terms: 0.00 + -120 = -120
-0.5y = -120

Divide each side by '-0.5'.
y = 240

Simplifying
y = 240

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