31=4y-9

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Solution for 31=4y-9 equation:


Simplifying
31 = 4y + -9

Reorder the terms:
31 = -9 + 4y

Solving
31 = -9 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
31 + -4y = -9 + 4y + -4y

Combine like terms: 4y + -4y = 0
31 + -4y = -9 + 0
31 + -4y = -9

Add '-31' to each side of the equation.
31 + -31 + -4y = -9 + -31

Combine like terms: 31 + -31 = 0
0 + -4y = -9 + -31
-4y = -9 + -31

Combine like terms: -9 + -31 = -40
-4y = -40

Divide each side by '-4'.
y = 10

Simplifying
y = 10

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