y=20-9y

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Solution for y=20-9y equation: 


Simplifying
y = 20 + -9y

Solving
y = 20 + -9y

Solving for variable 'y'.

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

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

Combine like terms: y + 9y = 10y
10y = 20 + -9y + 9y

Combine like terms: -9y + 9y = 0
10y = 20 + 0
10y = 20

Divide each side by '10'.
y = 2

Simplifying
y = 2

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