Question

нужно решить и скорость

$\frac{2}{3} + \frac{5}{8}$
$\frac{7} {12} - \frac{3}{8}$
$2 \frac{11}{16} - 1 \frac{5}{8}$
​

Answer 1

1) 2/3(8 +5/8= 16+15/24=31/24=1 7/21

2) 2 11/16 - 1 5/8= 43/16 -13/8(2 =43-26/16= 17/16 = 1 1/16

Answer 2

2/3 + 5/8 =7/11

7/12 - 3/8 =10/20

2 11/16 - 1 5/8 =3 16/24

вроде так