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; 2,1/4+3,6+1/6; 0,05+10,7/12+1/5;4,3/8+2,25+14,7/10; 9,5+5,9/10+6,1/3; 19,6+1/6+3,2/15

Предыдущий
вопрос Следующий
вопрос

1) 4,5 + 6,2/7 + 2,1/4 = 4 + 1/2 + 6 + 2/7 + 2 + 1/4 = 12 + 2/7 + 1/2 = 12 + 4/7 + 3/6 = 12 + 4/7 + 1/2 = 12 + 8/14 + 7/14 = 12 + 15/14 = 13 1/14

2) 6,3 + 19,1/2 + 3,2/3 = 6 + 3/10 + 19 + 1/2 + 3 + 2/3 = 28 + 1/2 + 3/10 = 28 + 7/10 + 1/2 = 28 + 3.5 + 5 = 36.5

3) 2,64 + 5,2/3 + 2/15 = 2 + 0.64 + 5 + 2/3 + 2/15 = 7 + 2/3 + 2/15 = 7 + 10/15 + 2/15 = 7 + 4/15 = 7 4/15

4) 9,25 + 3,5/6 + 1,2/3 = 9 + 0.25 + 3 + 5/6 + 1 + 2/3 = 12 + 5/6 + 1 1/2 = 12 + 5/6 + 9/6 = 12 + 14/6 = 12 2/3

5) 2,1/4 + 3,6 + 1/6 = 2 + 1/4 + 3 + 6 + 1/6 = 5 + 1/4 + 6 + 1/6 = 5 + 1/4 + 6 + 3/18 = 5 + 1/4 + 6 + 1/6 = 5 + 5/20 + 6 + 3/20 = 11 + 8/20 = 11 2/5

6) 0,05 + 10,7/12 + 1/5 = 0 + 0.05 + 10 + 7/12 + 1/5 = 10 + 0.05 + 7/12 + 1/5 = 10 + 0.05 + 35/60 + 12/60 = 10 + 0.05 + 47/60 = 10 + 0.05 + 24/30 = 10 + 0.05 + 4/5 = 10 + 0.05 + 0.8 = 10.85

7) 4,3/8 + 2,25 + 14,7/10 = 4 + 0.375 + 2 + 25/100 + 14 + 7/10 = 4 + 0.375 + 2 + 0.25 + 14 + 0.7 = 4 + 2.625 + 2.25 + 14.7 = 4 + 2.625 + 2.25 + 14.7 = 4 + 2.875 + 17 = 6.875 + 17 = 23.875

8) 9,5 + 5,9/10 + 6,1/3 = 9 + 0.5 + 5 + 0.9 + 6 + 1/3 = 14 + 0.9 + 6.333333 = 14 + 0.9 + 6 + 1/3 = 14 + 0.9 + 6.333333 = 20 + 0.9 + 0.333333 = 20 + 0.9 + 0.333333 = 20 + 1.233333 = 21.233333

9) 19,6 + 1/6 + 3,2/15 = 19 + 0.6 + 1/6 + 3 + 2/15 = 19 + 0.6 + 1/6 + 3 + 0.133333 = 19 + 0.6 + 0.16666633 + 3 + 0.133333 = 19 + 0.76666633 + 3 + 0.133333 = 19 + 0.76666633 + 3 + 0.133333 = 19 + 0.9 + 3.133333 = 19 + 0.9 + 0.133333 = 19 + 1.0366666 = 20.0366666