Question

РЕШИТЕ ПОЖАЛУЙСТА СРОЧНО (1 3/4+2 4/5)*12

Answer 1

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Answer 2

$(1 \frac{3}{4} + 2 \frac{4}{5} ) \times 12 = \\ 1)1 \frac{3}{4} + 2 \frac{4}{5} = \frac{7}{4} + \frac{14}{5} = \frac{7 \times 5 + 14 \times 4}{20} = \frac{35 +56 }{20} = \frac{91}{20} \\ 2) \frac{91}{20} \times 12 = \frac{91 \times 12}{20} = \frac{91 \times 3}{5} = 54.6$