-21=9b+6

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Solution for -21=9b+6 equation:


Simplifying
-21 = 9b + 6

Reorder the terms:
-21 = 6 + 9b

Solving
-21 = 6 + 9b

Solving for variable 'b'.

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

Add '-9b' to each side of the equation.
-21 + -9b = 6 + 9b + -9b

Combine like terms: 9b + -9b = 0
-21 + -9b = 6 + 0
-21 + -9b = 6

Add '21' to each side of the equation.
-21 + 21 + -9b = 6 + 21

Combine like terms: -21 + 21 = 0
0 + -9b = 6 + 21
-9b = 6 + 21

Combine like terms: 6 + 21 = 27
-9b = 27

Divide each side by '-9'.
b = -3

Simplifying
b = -3

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