9y+15=5y-1

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Solution for 9y+15=5y-1 equation: 


Simplifying
9y + 15 = 5y + -1

Reorder the terms:
15 + 9y = 5y + -1

Reorder the terms:
15 + 9y = -1 + 5y

Solving
15 + 9y = -1 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
15 + 9y + -5y = -1 + 5y + -5y

Combine like terms: 9y + -5y = 4y
15 + 4y = -1 + 5y + -5y

Combine like terms: 5y + -5y = 0
15 + 4y = -1 + 0
15 + 4y = -1

Add '-15' to each side of the equation.
15 + -15 + 4y = -1 + -15

Combine like terms: 15 + -15 = 0
0 + 4y = -1 + -15
4y = -1 + -15

Combine like terms: -1 + -15 = -16
4y = -16

Divide each side by '4'.
y = -4

Simplifying
y = -4

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