7y-9=-15+y

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Solution for 7y-9=-15+y equation:


Simplifying
7y + -9 = -15 + y

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

Solving
-9 + 7y = -15 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-9 + 7y + -1y = -15 + y + -1y

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

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

Add '9' to each side of the equation.
-9 + 9 + 6y = -15 + 9

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

Combine like terms: -15 + 9 = -6
6y = -6

Divide each side by '6'.
y = -1

Simplifying
y = -1

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