9y=7y-20

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Solution for 9y=7y-20 equation: 


Simplifying
9y = 7y + -20

Reorder the terms:
9y = -20 + 7y

Solving
9y = -20 + 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.
9y + -7y = -20 + 7y + -7y

Combine like terms: 9y + -7y = 2y
2y = -20 + 7y + -7y

Combine like terms: 7y + -7y = 0
2y = -20 + 0
2y = -20

Divide each side by '2'.
y = -10

Simplifying
y = -10

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