2/7-{(1/4÷2/3)-5/6}
(a)168/125
(b)125/168
(c)125/160
(d)160/125
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2/7-{(1/4÷2/3)-5/6}
=2/7-{(1/4x3/2)-5/6}
=2/7-{3/8-5/6}
=2/7-{9-20/24}
=2/7-{-11/24}
=2/7+11/24
=42+77/168
=125/168
Hope Helpful For You
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