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

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


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

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

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

Remove parenthesis around (-4 + 21b)
-5 + -20b + -4 + 21b = 0

Reorder the terms:
-5 + -4 + -20b + 21b = 0

Combine like terms: -5 + -4 = -9
-9 + -20b + 21b = 0

Combine like terms: -20b + 21b = 1b
-9 + 1b = 0

Solving
-9 + 1b = 0

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 + 1b = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 1b = 0 + 9
1b = 0 + 9

Combine like terms: 0 + 9 = 9
1b = 9

Divide each side by '1'.
b = 9

Simplifying
b = 9

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