Answers

2015-08-08T11:13:35+05:30
First we same the denominator =3/4-3multiply by 70/4multiply by 70
*5/7-5multiply  by40/7 multiply by40..
ans=3/4-180/280and5/7-200/280..
the no. between 180/280and200/280are:181/280,182/280,183/280,184/280,185/280 there can be more rational no.s ..
hope it's help u
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