(20b-1)-10b=-31

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Solution for (20b-1)-10b=-31 equation:


Simplifying
(20b + -1) + -10b = -31

Reorder the terms:
(-1 + 20b) + -10b = -31

Remove parenthesis around (-1 + 20b)
-1 + 20b + -10b = -31

Combine like terms: 20b + -10b = 10b
-1 + 10b = -31

Solving
-1 + 10b = -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 + 10b = -31 + 1

Combine like terms: -1 + 1 = 0
0 + 10b = -31 + 1
10b = -31 + 1

Combine like terms: -31 + 1 = -30
10b = -30

Divide each side by '10'.
b = -3

Simplifying
b = -3

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