16,5 : 2,75 - 1/19 * 57 = 3
1) 16,5 : 2,75 = 1650/100 : 275/100 = 1650/100 * 100/275 = 1650/275 = 6
2) 1/19 * 57 = 57/19 = 3
3) 6 - 3 = 3
16,5 : 2,75 - 1/19 * 57 = 3
1) 16,5 : 2,75 = 1650/100 : 275/100 = 1650/100 * 100/275 = 1650/275 = 6
2) 1/19 * 57 = 57/19 = 3
3) 6 - 3 = 3