15-5y-3y=-1

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Solution for 15-5y-3y=-1 equation: 


Simplifying
15 + -5y + -3y = -1

Combine like terms: -5y + -3y = -8y
15 + -8y = -1

Solving
15 + -8y = -1

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 + -8y = -1 + -15

Combine like terms: 15 + -15 = 0
0 + -8y = -1 + -15
-8y = -1 + -15

Combine like terms: -1 + -15 = -16
-8y = -16

Divide each side by '-8'.
y = 2

Simplifying
y = 2

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