2.5-y=15

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Solution for 2.5-y=15 equation: 


Simplifying
2.5 + -1y = 15

Solving
2.5 + -1y = 15

Solving for variable 'y'.

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

Add '-2.5' to each side of the equation.
2.5 + -2.5 + -1y = 15 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -1y = 15 + -2.5
-1y = 15 + -2.5

Combine like terms: 15 + -2.5 = 12.5
-1y = 12.5

Divide each side by '-1'.
y = -12.5

Simplifying
y = -12.5

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