.3(15-2y)-.2y=.5

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Solution for .3(15-2y)-.2y=.5 equation: 


Simplifying
0.3(15 + -2y) + -0.2y = 0.5
(15 * 0.3 + -2y * 0.3) + -0.2y = 0.5
(4.5 + -0.6y) + -0.2y = 0.5

Combine like terms: -0.6y + -0.2y = -0.8y
4.5 + -0.8y = 0.5

Solving
4.5 + -0.8y = 0.5

Solving for variable 'y'.

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

Add '-4.5' to each side of the equation.
4.5 + -4.5 + -0.8y = 0.5 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + -0.8y = 0.5 + -4.5
-0.8y = 0.5 + -4.5

Combine like terms: 0.5 + -4.5 = -4
-0.8y = -4

Divide each side by '-0.8'.
y = 5

Simplifying
y = 5

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