Применены свойства логарифмов
957 - (x+336) = 428
x + 336 = 529
x = 193
ответ: х = 193
1) 15/4 : 3/100 = 15/4 * 100/3 = 125
2) 4 52/100 : (-4 5/27) = 452/100 : (-113/27) = 452/100 * (-27/113)= -1.08
3)125 + (-1.08)= 125 - 1.08 = 123.92
<span>а) 6/25*15/17; = 6/5 * 3/17 = 18/85
б) 14/15*4/21; = 2/15 * 4/3 = 8/45
в) 24/25*7/36; = 4/25 * 7/6 = 28/150
г) 5/24*16/17 = 5/3 * 2/17 = 10/51</span>