9y=5y-20

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Solution for 9y=5y-20 equation: 


Simplifying
9y = 5y + -20

Reorder the terms:
9y = -20 + 5y

Solving
9y = -20 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
9y + -5y = -20 + 5y + -5y

Combine like terms: 9y + -5y = 4y
4y = -20 + 5y + -5y

Combine like terms: 5y + -5y = 0
4y = -20 + 0
4y = -20

Divide each side by '4'.
y = -5

Simplifying
y = -5

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