1,75 : 1 1/8 + 2/18 = 1 целая 2/3
1) 1,75 : 1 1/8 = 1 3/4 : 9/8 = 7/4 * 8/9 = (7*2)/(1*9) = 14/9 = 1 5/9
2) 1 5/9 + 2/18 = 1 5/9 + 1/9 = 1 6/9 = 1 2/3
(0,3 - 3/20 ) * 2 6/7 = 3/7
1) 0,3 - 3/20 = 3/10 - 3/20 = 6/20 - 3/20 = 3/20
2) 3/20 * 2 6/7 = 3/20 * 20/7 = 3/7
(1,08 - 2/25) : 5/9 = 1,8
1) 1,08 - 2/25 = 1,08 - 0,08 = 1
2) 1 : 5/9 = 1 * 9/5 = 9/5 = 1 целая 4/5 = 1,8