20=9+2y

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Solution for 20=9+2y equation:


Simplifying
20 = 9 + 2y

Solving
20 = 9 + 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.
20 + -2y = 9 + 2y + -2y

Combine like terms: 2y + -2y = 0
20 + -2y = 9 + 0
20 + -2y = 9

Add '-20' to each side of the equation.
20 + -20 + -2y = 9 + -20

Combine like terms: 20 + -20 = 0
0 + -2y = 9 + -20
-2y = 9 + -20

Combine like terms: 9 + -20 = -11
-2y = -11

Divide each side by '-2'.
y = 5.5

Simplifying
y = 5.5

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