Question

вычислите
1.(3 2/3 + 1 3/4):(6 7/12 - 2 1/4)
2.(-9,7+7,1)*(-1 2/13)

Answer 1

$3\frac{3}{3}$

В такой форме крайне не рекомендую писать.

1. $\frac{3\frac{2}{3} + 1\frac{3}{4}}{6\frac{7}{12} - 2\frac{1}{4}} = \frac{\frac{11}{3} + \frac{7}{4}}{\frac{79}{12} - \frac{9}{4}} = \frac{\frac{44 + 21}{12}}{\frac{79 - 27}{12}}  = 65 / 52 = 1.25$

2. $(-9.7 + 7.1) * ( - 1\frac{2}{13} ) = (-2.6*-15)/ 13 = 39 / 13 = 3$