9y-1-7y=7-6y-15

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Solution for 9y-1-7y=7-6y-15 equation:


Simplifying
9y + -1 + -7y = 7 + -6y + -15

Reorder the terms:
-1 + 9y + -7y = 7 + -6y + -15

Combine like terms: 9y + -7y = 2y
-1 + 2y = 7 + -6y + -15

Reorder the terms:
-1 + 2y = 7 + -15 + -6y

Combine like terms: 7 + -15 = -8
-1 + 2y = -8 + -6y

Solving
-1 + 2y = -8 + -6y

Solving for variable 'y'.

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

Add '6y' to each side of the equation.
-1 + 2y + 6y = -8 + -6y + 6y

Combine like terms: 2y + 6y = 8y
-1 + 8y = -8 + -6y + 6y

Combine like terms: -6y + 6y = 0
-1 + 8y = -8 + 0
-1 + 8y = -8

Add '1' to each side of the equation.
-1 + 1 + 8y = -8 + 1

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

Combine like terms: -8 + 1 = -7
8y = -7

Divide each side by '8'.
y = -0.875

Simplifying
y = -0.875

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