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July 2022 1 12 Report

найдите значение выражения а)8целых-3целых 6/7 Б)2 целых 1/8 + 3 целых 5/12 в) 5 целых 13/15 + 1 целая 7/12
Г) 7целых 3/8 -3целых 5/6

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2606051 $1.\;8-3\frac67=\frac{56}7-\frac{27}7=\frac{29}7=4\frac17\\2.\;2\frac18+3\frac5{12}=\frac{17}8+\frac{41}{12}=\frac{17\cdot3+41\cdot2}{24}=\frac{51+82}{24}=\frac{133}{24}=5\frac{13}{24}\\3.\;5\frac{13}{15}+1\frac7{12}=\frac{88}{15}+\frac{19}{12}=\frac{88\cdot4+19\cdot5}{60}=\frac{352+95}{60}=\frac{447}{60}=7\frac{27}{60}=7\frac9{20}\\4.\;7\frac38-3\frac56=\frac{59}8-\frac{23}6=\frac{59\cdot3-23\cdot4}{24}=\frac{177-92}{24}=\frac{85}{24}=3\frac{13}{24}$

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