3y+15-y=39

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Solution for 3y+15-y=39 equation:


Simplifying
3y + 15 + -1y = 39

Reorder the terms:
15 + 3y + -1y = 39

Combine like terms: 3y + -1y = 2y
15 + 2y = 39

Solving
15 + 2y = 39

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 = 39 + -15

Combine like terms: 15 + -15 = 0
0 + 2y = 39 + -15
2y = 39 + -15

Combine like terms: 39 + -15 = 24
2y = 24

Divide each side by '2'.
y = 12

Simplifying
y = 12

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