15+3y-y-9=

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Solution for 15+3y-y-9= equation:


Simplifying
15 + 3y + -1y + -9 = 0

Reorder the terms:
15 + -9 + 3y + -1y = 0

Combine like terms: 15 + -9 = 6
6 + 3y + -1y = 0

Combine like terms: 3y + -1y = 2y
6 + 2y = 0

Solving
6 + 2y = 0

Solving for variable 'y'.

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

Add '-6' to each side of the equation.
6 + -6 + 2y = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 2y = 0 + -6
2y = 0 + -6

Combine like terms: 0 + -6 = -6
2y = -6

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

Simplifying
y = -3

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