3/7+-6/11+-8/21+5/22
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Answer:
20/30
Step-by-step explanation:
(3/7)+(6/11)+(-8/21)+(5/22)
L.C.M of 7,11,21,22 is 462
(99/462)+(252/462)-(176/462)+(105/462)
therefore (99+252-176+105)/462
gives (280/462)=20/33
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