21=8b

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Solution for 21=8b equation:


Simplifying
21 = 8b

Solving
21 = 8b

Solving for variable 'b'.

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

Add '-8b' to each side of the equation.
21 + -8b = 8b + -8b

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

Add '-21' to each side of the equation.
21 + -21 + -8b = 0 + -21

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

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

Divide each side by '-8'.
b = 2.625

Simplifying
b = 2.625

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