8b-9+2b=31

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Solution for 8b-9+2b=31 equation:


Simplifying
8b + -9 + 2b = 31

Reorder the terms:
-9 + 8b + 2b = 31

Combine like terms: 8b + 2b = 10b
-9 + 10b = 31

Solving
-9 + 10b = 31

Solving for variable 'b'.

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

Add '9' to each side of the equation.
-9 + 9 + 10b = 31 + 9

Combine like terms: -9 + 9 = 0
0 + 10b = 31 + 9
10b = 31 + 9

Combine like terms: 31 + 9 = 40
10b = 40

Divide each side by '10'.
b = 4

Simplifying
b = 4

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