31-3b=7

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Solution for 31-3b=7 equation: 


Simplifying
31 + -3b = 7

Solving
31 + -3b = 7

Solving for variable 'b'.

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

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

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

Combine like terms: 7 + -31 = -24
-3b = -24

Divide each side by '-3'.
b = 8

Simplifying
b = 8

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