1. Using properties find:
(a)
3/7+(-6/11)+(-8/21)+5/22
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Answer:3/7+(-6/11)+(-8/21)+5/22
=3/7-6/11-8/21+5/22
=198/462-252/462-176/462+105/462
=-129/462
=-43/154
Step-by-step explanation:
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