0.5(450+-0.5y)+0.3y=230

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Solution for 0.5(450+-0.5y)+0.3y=230 equation: 


Simplifying
0.5(450 + -0.5y) + 0.3y = 230
(450 * 0.5 + -0.5y * 0.5) + 0.3y = 230
(225 + -0.25y) + 0.3y = 230

Combine like terms: -0.25y + 0.3y = 0.05y
225 + 0.05y = 230

Solving
225 + 0.05y = 230

Solving for variable 'y'.

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

Add '-225' to each side of the equation.
225 + -225 + 0.05y = 230 + -225

Combine like terms: 225 + -225 = 0
0 + 0.05y = 230 + -225
0.05y = 230 + -225

Combine like terms: 230 + -225 = 5
0.05y = 5

Divide each side by '0.05'.
y = 100

Simplifying
y = 100

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