3/4 (х + 2) + 2/3(х - 1) = 5
3/4х + 3/2 + 2/3х - 2/3 = 5
3/4х + 2/3х = 5 - 3/2 + 2/3
9х + 8х = 60 - 18 + 8
17х = 50
х = 50/17
х = 2целых 16/17
47,74,70,07,40,04 вроде так
1) 10 * 201 = 2010
2) 10000 - 7875 =2125
3) 2010 - 1785 = 225
4)2125 * 225 = 478125
Ответ:478125.