Using suitable rearrangement find the sum (a)4/7 +(-4/9) +3/7 +(-13/9) (b) -
5 + 7/10 +( 3/7 ) + (-3) + 5/14 + (-4/15)
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Answer:
4/7 +(-4/9)+3/7+(-13/9)
36-28+27-91/63
-56/63
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