Question

Va rog frumos sa ma ajutati si pe mn cu o rezolvare [12+11:(3pe4+1pe6)]·7pe27 va multumesc

Answer 1

$[12 + 11 : ( \frac{3}{4} + \frac{1}{6})] \times \frac{7}{27} = \\ \\ \frac{3}{4} + \frac{1}{6} = \frac{3 \times 3}{4 \times 3} + \frac{1 \times 2}{6 \times 2} = \frac{9}{12} + \frac{2}{12} = \frac{9 + 2}{12} = \frac{11}{12} \\ \\ 11 : \frac{11}{12} = \frac{11}{1} \times \frac{12}{11} = \frac{11 \times 12}{1 \times 11} = \frac{132}{11} = 12 \\ \\ 12 + 12 = 24 \\ \\ 24 \times \frac{7}{27} = \frac{24 \times 7}{1 \times 27} = \frac{168}{27} = \frac{56}{9} = 6 \frac{2}{9}$