Question

671. Вычислите: 1) -6 3/4*5 1/3-4 1/3*3 3/13

Answer 1

Ответ:

$- 6 \frac{3}{4} \times 5 \frac{1}{3} - 4 \frac{1}{3} \times 3 \frac{3}{13} = - 50 \\ 1) - 6 \frac{3}{4} \times 5 \frac{1}{3} = - \frac{27}{4} \times \frac{16}{3} = \\ = - 9 \times 4 = - 36 \\ 2)4 \frac{1}{3} \times 3 \frac{3}{13} = \frac{13}{3} \times \frac{42}{13} = 14 \\ 3) - 36 - 14 = - 50$

Answer 2

6 3/4×5 1/3-4 1/3×3 3/13=50

6 3/4×5 1/3=27/4•16/3=9•4=36

4 1/3•3 3/13=13/3•42/13=14

36-14.