31=2y+9

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Solution for 31=2y+9 equation:


Simplifying
31 = 2y + 9

Reorder the terms:
31 = 9 + 2y

Solving
31 = 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.
31 + -2y = 9 + 2y + -2y

Combine like terms: 2y + -2y = 0
31 + -2y = 9 + 0
31 + -2y = 9

Add '-31' to each side of the equation.
31 + -31 + -2y = 9 + -31

Combine like terms: 31 + -31 = 0
0 + -2y = 9 + -31
-2y = 9 + -31

Combine like terms: 9 + -31 = -22
-2y = -22

Divide each side by '-2'.
y = 11

Simplifying
y = 11

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