-5(4b+3)+(21b+7)=0

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Solution for -5(4b+3)+(21b+7)=0 equation:


Simplifying
-5(4b + 3) + (21b + 7) = 0

Reorder the terms:
-5(3 + 4b) + (21b + 7) = 0
(3 * -5 + 4b * -5) + (21b + 7) = 0
(-15 + -20b) + (21b + 7) = 0

Reorder the terms:
-15 + -20b + (7 + 21b) = 0

Remove parenthesis around (7 + 21b)
-15 + -20b + 7 + 21b = 0

Reorder the terms:
-15 + 7 + -20b + 21b = 0

Combine like terms: -15 + 7 = -8
-8 + -20b + 21b = 0

Combine like terms: -20b + 21b = 1b
-8 + 1b = 0

Solving
-8 + 1b = 0

Solving for variable 'b'.

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

Add '8' to each side of the equation.
-8 + 8 + 1b = 0 + 8

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

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

Divide each side by '1'.
b = 8

Simplifying
b = 8

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