# How do you solve #6/(b-1)=9/7#?

##### 1 Answer

Aug 23, 2017

B =

#### Explanation:

All we have to do is cross multiply

(6)(7) = 9(b - 1)

42 = 9b - 9

Change them side

9b - 9 = 42

9b = 42 + 9

9b = 51

Divide both sides by 9

b =

But if they want the answer in decimal, it is b =5.57