Вычислите, представив десятичную дробь в виде обыкновенной: 4,5+6,2/7+2,1/4; 6,3+19,1/2+3,2/3; 2,64+5,2/3+2/15; 9,25+3,5/6+1,2/3;

1) 45/10 + (6 * 7 + 2)/7 + (2 * 4 + 1)/4 = 126/28 + 176/28 + 63/28 = 365/28;

2) 63/10 + (19 * 2 + 1)/2 + (3 * 3 + 2)/3 = 189/30 + 585/30 + 110/30 = 884/30;

3) 264/100 + (5 * 3 + 2)/3 + 2/15 = 198/75 + 425/75 + 10/75 = 633/75;

4) 925/100 + (3 * 6 + 5)/6 + (1 * 3 + 2)/3 = 111/12 + 46/12 + 20/12 = 177/12;

5) (2 * 4 + 1)/4 + 36/10 + 1/6 = 135/60 + 216/60 + 10/60 = 361/60;

6) 5/100 + (10 * 12 + 7)/12 + 1/5 = 3/60 + 635/60 + 12/60 = 650/60 = 65/6;

7) (4 * 8 + 3)/8 + 225/100 + (14 * 10 + 7)/10 = 175/40 + 90/40 + 588/40 = 853/40;

8) 95/10 + (5 * 10 + 9)/10 + (6 * 3 + 1)/3 = 462/30 + 190/30 = 652/30;

9) 196/10 + 1/6 + (3 * 15 + 2)/15 = 588/30 + 5/30 + 94/30 = 687/30.