Question

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Answer 1

       ............................................= 48

$1)\;\;\;4\frac{1}{3} -2,7=4\frac{1}{3}-2\frac{7}{10}= 4\frac{10}{30}-2\frac{21}{30}=3\frac{40}{30}-2\frac{21}{30}=1\frac{19}{30} \\ \\ 2)\;\;\;5,6:1\frac{19}{30}=\frac{56}{10} :\frac{49}{30} =\frac{56}{10}*\frac{30}{49}=\frac{24}{7}=3\frac{3}{7} \\  \\ 3)\;\;\;3\frac{3}{7} +2\frac{2}{3}= 3\frac{9}{21} +2\frac{14}{21} =5\frac{23}{21} =6\frac{2}{21} \\ \\ 4)\;\;\;6\frac{2}{21}*7\frac{7}{8} =\frac{128}{21} *\frac{63}{8} =16*3=48$