Find the ratio a:b, if it is given that ...

1) 2a=9b

2) a/5 = b/7

3) 6a−3b=5b

4) a+b=3b

5) a−2b/a+2b = 1/2

6) 2a−3b/5 = a+b/3

Respuesta :

 The answer will have to be 4) a+b=3b so this is because a+b hads to equal something like a=1 ans b=2 then you will have a+b and you will always end up with 3ab or 3b