15-2y=20

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Solution for 15-2y=20 equation:


Simplifying
15 + -2y = 20

Solving
15 + -2y = 20

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 = 20 + -15

Combine like terms: 15 + -15 = 0
0 + -2y = 20 + -15
-2y = 20 + -15

Combine like terms: 20 + -15 = 5
-2y = 5

Divide each side by '-2'.
y = -2.5

Simplifying
y = -2.5

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