Question

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17*45
13*78
45*54
21*54
5/5+2/5 ​

Answer 1

Ответ:

$17 \times 45 = 765 \\ 13 \times 78 = 1014 \\ 45 \times 54 = 2430 \\ 21 \times 54 = 1134 \\ \frac{5}{5} + \frac{2}{5} = \frac{5 + 2}{5} = \frac{7}{5}$

неправильная дробь

$\frac{7}{5}$

смешанная

$1 \frac{2}{5}$