-5(4b+1)+(21b-1)=0

Solution for -5(4b+1)+(21b-1)=0 equation:

Simplifying
-5(4b + 1) + (21b + -1) = 0

Reorder the terms:
-5(1 + 4b) + (21b + -1) = 0
(1 * -5 + 4b * -5) + (21b + -1) = 0
(-5 + -20b) + (21b + -1) = 0

Reorder the terms:
-5 + -20b + (-1 + 21b) = 0

Remove parenthesis around (-1 + 21b)
-5 + -20b + -1 + 21b = 0

Reorder the terms:
-5 + -1 + -20b + 21b = 0

Combine like terms: -5 + -1 = -6
-6 + -20b + 21b = 0

Combine like terms: -20b + 21b = 1b
-6 + 1b = 0

Solving
-6 + 1b = 0

Solving for variable 'b'.

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

Add '6' to each side of the equation.
-6 + 6 + 1b = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 1b = 0 + 6
1b = 0 + 6

Combine like terms: 0 + 6 = 6
1b = 6

Divide each side by '1'.
b = 6

Simplifying
b = 6