9=b(21)

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Solution for 9=b(21) equation:


Simplifying
9 = b(21)

Reorder the terms for easier multiplication:
9 = 21b

Solving
9 = 21b

Solving for variable 'b'.

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

Add '-21b' to each side of the equation.
9 + -21b = 21b + -21b

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

Add '-9' to each side of the equation.
9 + -9 + -21b = 0 + -9

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

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

Divide each side by '-21'.
b = 0.4285714286

Simplifying
b = 0.4285714286

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