7.5+-1y+3y=22.5

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Solution for 7.5+-1y+3y=22.5 equation: 


Simplifying
7.5 + -1y + 3y = 22.5

Combine like terms: -1y + 3y = 2y
7.5 + 2y = 22.5

Solving
7.5 + 2y = 22.5

Solving for variable 'y'.

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

Add '-7.5' to each side of the equation.
7.5 + -7.5 + 2y = 22.5 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + 2y = 22.5 + -7.5
2y = 22.5 + -7.5

Combine like terms: 22.5 + -7.5 = 15
2y = 15

Divide each side by '2'.
y = 7.5

Simplifying
y = 7.5

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