-4/7+(1/4+1/-2)=(-4/7++1/4)+1/-2
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Answer:
= -4/7 +1/4-1/2
take lcm of 7,4,2
lcm is 28
((-4×4)+(1×7)-(1×14))÷28
(-16+7-14)÷28
-21÷28
=-3/4
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