39-3y=15

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Solution for 39-3y=15 equation: 


Simplifying
39 + -3y = 15

Solving
39 + -3y = 15

Solving for variable 'y'.

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

Add '-39' to each side of the equation.
39 + -39 + -3y = 15 + -39

Combine like terms: 39 + -39 = 0
0 + -3y = 15 + -39
-3y = 15 + -39

Combine like terms: 15 + -39 = -24
-3y = -24

Divide each side by '-3'.
y = 8

Simplifying
y = 8

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