3b+5b-1=31

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Solution for 3b+5b-1=31 equation: 


Simplifying
3b + 5b + -1 = 31

Reorder the terms:
-1 + 3b + 5b = 31

Combine like terms: 3b + 5b = 8b
-1 + 8b = 31

Solving
-1 + 8b = 31

Solving for variable 'b'.

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

Add '1' to each side of the equation.
-1 + 1 + 8b = 31 + 1

Combine like terms: -1 + 1 = 0
0 + 8b = 31 + 1
8b = 31 + 1

Combine like terms: 31 + 1 = 32
8b = 32

Divide each side by '8'.
b = 4

Simplifying
b = 4

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