(215.4-0.5y)+y=315.2

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Solution for (215.4-0.5y)+y=315.2 equation: 


Simplifying
(215.4 + -0.5y) + y = 315.2

Remove parenthesis around (215.4 + -0.5y)
215.4 + -0.5y + y = 315.2

Combine like terms: -0.5y + y = 0.5y
215.4 + 0.5y = 315.2

Solving
215.4 + 0.5y = 315.2

Solving for variable 'y'.

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

Add '-215.4' to each side of the equation.
215.4 + -215.4 + 0.5y = 315.2 + -215.4

Combine like terms: 215.4 + -215.4 = 0.0
0.0 + 0.5y = 315.2 + -215.4
0.5y = 315.2 + -215.4

Combine like terms: 315.2 + -215.4 = 99.8
0.5y = 99.8

Divide each side by '0.5'.
y = 199.6

Simplifying
y = 199.6

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