divide the sum of 8/3and 4/7 to the product of -3/7 and 14/9
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8/3 + 4/7
= 56 /21 + 12/21 (multiplying 8/3 by 7/7 , multipying 4 / 7 by 3/3 )
=56 + 12 / 21
= 68 /21 -------- (1)
-3/7 x 14/9
= -42/63 ---------(2)
= now deviding (1) by (2)
68/21 devided by -42/63
= 68/21 x 63/-42
= - 32/ 7
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