7y-9=-2y

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Solution for 7y-9=-2y equation:


Simplifying
7y + -9 = -2y

Reorder the terms:
-9 + 7y = -2y

Solving
-9 + 7y = -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
-9 + 7y + 2y = -2y + 2y

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

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

Add '9' to each side of the equation.
-9 + 9 + 9y = 0 + 9

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

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

Divide each side by '9'.
y = 1

Simplifying
y = 1

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