SOLUTION: can you show me how to solve this proportion? 7/9 = b/b-10

Algebra ->  Proportions -> SOLUTION: can you show me how to solve this proportion? 7/9 = b/b-10       Log On


   

Question 516728: can you show me how to solve this proportion? 7/9 = b/b-10
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
%287%2F9%29=%28b%2F%28b-10%29%29
cross multiply
7(b-10)=9b
7b-70=9b
+70
7b=9b+70
-9b
+7b-9b=70
-2b=70
/-2
b=-35