9=15+2y

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Solution for 9=15+2y equation:


Simplifying
9 = 15 + 2y

Solving
9 = 15 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
9 + -2y = 15 + 2y + -2y

Combine like terms: 2y + -2y = 0
9 + -2y = 15 + 0
9 + -2y = 15

Add '-9' to each side of the equation.
9 + -9 + -2y = 15 + -9

Combine like terms: 9 + -9 = 0
0 + -2y = 15 + -9
-2y = 15 + -9

Combine like terms: 15 + -9 = 6
-2y = 6

Divide each side by '-2'.
y = -3

Simplifying
y = -3

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