Y - 8 2/7 = 79 3/14 + 71,5
y - 8 2/7 = 150 10/14
y = 150 10/14 + 8 2/7
y = 150 10/14 + 8 4/14
y = 159
.........................................................
1)
к*7=80-31
к*49
к=7
2)27:<span>b=53-44
27=</span><span>b*9
</span><span>b=3</span>
0+0 И 0-0 ВОТ ТАКОЕ РЕШЕНИЕ ЗАДАЧИ