9y-9=7y+9

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


Simplifying
9y + -9 = 7y + 9

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

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

Solving
-9 + 9y = 9 + 7y

Solving for variable 'y'.

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

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

Combine like terms: 9y + -7y = 2y
-9 + 2y = 9 + 7y + -7y

Combine like terms: 7y + -7y = 0
-9 + 2y = 9 + 0
-9 + 2y = 9

Add '9' to each side of the equation.
-9 + 9 + 2y = 9 + 9

Combine like terms: -9 + 9 = 0
0 + 2y = 9 + 9
2y = 9 + 9

Combine like terms: 9 + 9 = 18
2y = 18

Divide each side by '2'.
y = 9

Simplifying
y = 9

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