31-4=-9y

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Solution for 31-4=-9y equation:


Simplifying
31 + -4 = -9y

Combine like terms: 31 + -4 = 27
27 = -9y

Solving
27 = -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.
27 + 9y = -9y + 9y

Combine like terms: -9y + 9y = 0
27 + 9y = 0

Add '-27' to each side of the equation.
27 + -27 + 9y = 0 + -27

Combine like terms: 27 + -27 = 0
0 + 9y = 0 + -27
9y = 0 + -27

Combine like terms: 0 + -27 = -27
9y = -27

Divide each side by '9'.
y = -3

Simplifying
y = -3

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