31=3-7y

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Solution for 31=3-7y equation:


Simplifying
31 = 3 + -7y

Solving
31 = 3 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
31 + 7y = 3 + -7y + 7y

Combine like terms: -7y + 7y = 0
31 + 7y = 3 + 0
31 + 7y = 3

Add '-31' to each side of the equation.
31 + -31 + 7y = 3 + -31

Combine like terms: 31 + -31 = 0
0 + 7y = 3 + -31
7y = 3 + -31

Combine like terms: 3 + -31 = -28
7y = -28

Divide each side by '7'.
y = -4

Simplifying
y = -4

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