10ч44м48сек=38688сек.
38688:48=806сек
Будет -1/45 !!!!!!!!?!!!!!!!!!!?!!!!!?!!!!
1) 3 1/6- 1 3/4= 19/6- 7/4=76-42 /24= 34/24= 17/12=1 5/12
2) 1 8/9: 1 5/12= 17/9:17/12= 17/9*12/17=1/3*1/4=1/12
<span>39ха+89=49х5
39а=245-89
39а=156
а=156/39=4
24в-497=439
24в=439+497
24в=936
в=936/24=39
</span>