Răspuns:
[tex]54 \frac{17}{20} = \frac{54 \times 20 + 17}{20} = \frac{1097}{20} = 54.85m \\ 1 \frac{1}{5} = \frac{1 \times 5 + 1}{5} = \frac{6}{5 } = 1.2m[/tex]
[tex]2 \frac{3}{10 } = \frac{2 \times 10 + 3}{10} = \frac{23}{10} = 2.3m[/tex]
[tex]15p.......8c.......54.85 \\ - - - - - - - - - \\ 15 \times 1.2 + 8 \times 2.3 = 18 + 18.4 = 36.4m \\ - - - - - - - - - - - - - - \\ 54.85m - 36.4m = 18.45m \: (ramasi)[/tex]
Sper că te-am ajutat! ^^
