Question

помогите решить пример

Answer 1

$5 \frac{7}{8} - \frac{9}{10} = \frac{470}{80} - \frac{72}{80} = \frac{398}{80} = 4\frac{39}{40}$
$7 \frac{5}{12} - 3\frac{2}{9} = \frac{89}{12} - \frac{29}{9} = \frac{267}{36} - \frac{116}{36} = \frac{151}{36} = 4\frac{7}{36}$

Answer 2

7 5/12-3 2/9=7 15/36-3 8/36=4 7/36

10 1/2-4 9/14=10 7/14-4 9/14=9 21/14-4 9/14=5 12/14=5 6/7

7 4/7-5 7/9=7 36/63-5 49/63=6 99/63-5 49/63=1 50/63

2 3/10-1 11/15=2 9/30-1 22/30=1 39/30-1 22/30=17/30

5 3/8-3 5/6=5 9/24-3 20/24=4 33/24-3 20/24=1 13/24