<span>4 17/12 = 4 + 12/12 + 5/12 = 5+5/12 = 5 5/12
7 43/18 =7 + 36/18+ 7/18 = 9 7/18
2 73/34 = 2+ 68/34 + 5/34 = 4 5/34
5 57/19 = 5 + 57/19 =5+3=8</span>
X+y=20
5x+3y=84
x=20-y
100-5y+3y=84
-2y=-16
y=8
x=12
НЕ ЗНАЮ :-(.............................
9-2=7(ящик.) свеклы
9+7=16 (овощей) всего