Question

If a/4 = b/7, what is the value of a-b/b ?

Answer 1

Consider this option:
1. to simplify given expression (a-b)/b:

`(a-b)/(b)= (a)/(b)-1;`
2. to rewrite given expression a/4=b/7:

`(a)/(b) = (4)/(7);`
3. to substitute a/b into the simplified expression:

`(a)/(b) -1= (4)/(7) -1=- (3)/(7);`

answer: -3/7