9-20=5y

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Solution for 9-20=5y equation: 


Simplifying
9 + -20 = 5y

Combine like terms: 9 + -20 = -11
-11 = 5y

Solving
-11 = 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.
-11 + -5y = 5y + -5y

Combine like terms: 5y + -5y = 0
-11 + -5y = 0

Add '11' to each side of the equation.
-11 + 11 + -5y = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -5y = 0 + 11
-5y = 0 + 11

Combine like terms: 0 + 11 = 11
-5y = 11

Divide each side by '-5'.
y = -2.2

Simplifying
y = -2.2

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