15+3y=9

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Solution for 15+3y=9 equation: 


Simplifying
15 + 3y = 9

Solving
15 + 3y = 9

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 + 3y = 9 + -15

Combine like terms: 15 + -15 = 0
0 + 3y = 9 + -15
3y = 9 + -15

Combine like terms: 9 + -15 = -6
3y = -6

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

Simplifying
y = -2

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