Question

(4 2/7 × 5 3/5 - 12 1/3)+ 4/9×9/4×1 1/2

Answer 1

(6*10 целых 9/15-40 целых 5/15)+4/9*9/4*11/2=
(63 целых 9/15-40 целых 5/15)+11/2=
23 целых 4/15+5 целых 1/2=
28 целых 23/30

Answer 2

1)
$4 \frac{2}{7} \times 5 \frac{3}{5 } = \frac{30}{7} \times \frac{28}{5} = 24$
2)
$24 - 12 \frac{1}{3} = 23 \frac{3}{3} - 12 \frac{1}{3} = 11 \frac{2}{3}$
3)
$\frac{4}{9} \times \frac{9}{4} \times \frac{11}{2} = 1 \times \frac{11}{2} = 5 \frac{1}{2}$
4)
$11 \frac{2}{3 } + 5 \frac{1}{2 } = 16 \frac{4 + 3}{6} = 16 \frac{7}{6} = 17 \frac{1}{6}$