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А) 3/4*5/7 = 15/28
б) 4/11*3/4 = 12/44
в) 5/7 * 14/19 = 70/133
г) (3/5)^2=9/25 = 0,36
д) 4/5 : 3/7 = 4/5 * 7/3 = 28/15
e) 15/8 : 5/4 = 15/8 * 4/5 = 60/40 = 1,5
ж) 4/9 : 2 = 4/9 * 1/2 = 4/18 = 2/9
з) 6 : 3/5 = 6 *5/3 = 30/3 = 10
2.
а) 2*(14/15 * 3/2) = 14/5 = 2,8
б) 12/11 * 4/3 * 11/24 = 4/6
в) 1/2 *2/3 *3/4 *4/5 = 24/120 = 1/5 = 0,2
4 * 9 = 36 - помидоры
100 - 36 = 64 -цибули
84 : 8 = 8 - 1 стоит 1 кг
1) 1 2/3 - 3,2 = 5/3 - 16/5 = 25/15 - 48/15 = - 23/15
2) 4,6:(-23/15) = 46/10 * (-15/23) = -3
3) -3 + 1 3/8 = -2 8/8 + 1 3/8 = -1 5/8 = -1,625