Question

please slove this question photo upar hai

Answer 1

make the factors same in both cases. make m equal in both ratios by multiplying with factor

Answer 2

l:m =3/2:7/4=6:7 m:n=7/3:21/5=35:63=5:9
l:m:n=30:35:63
l:n=30:63=10:21