5. Simplify: 2/3 + -4/5 + 7/15 + -11/20
(a) -1/5
(b) -13/60
(c) -4/15
(d) – 7/30
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Answer:
( b )
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Answer:
2/3+-4/5+7/15+-)11/20=43/60or0.716
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