15-2y=180

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Solution for 15-2y=180 equation: 


Simplifying
15 + -2y = 180

Solving
15 + -2y = 180

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + -2y = 180 + -15

Combine like terms: 15 + -15 = 0
0 + -2y = 180 + -15
-2y = 180 + -15

Combine like terms: 180 + -15 = 165
-2y = 165

Divide each side by '-2'.
y = -82.5

Simplifying
y = -82.5

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