3ab+21b=

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Solution for 3ab+21b= equation:


Simplifying
3ab + 21b = 0

Solving
3ab + 21b = 0

Solving for variable 'a'.

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

Add '-21b' to each side of the equation.
3ab + 21b + -21b = 0 + -21b

Combine like terms: 21b + -21b = 0
3ab + 0 = 0 + -21b
3ab = 0 + -21b
Remove the zero:
3ab = -21b

Divide each side by '3b'.
a = -7

Simplifying
a = -7

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