Question

А)9 2/3+1 1/4 б)13 1/5+4 2/7 в)2 3/10+6 1/9 г)4 2/3+7 4/5 д)7 3/20+8 4/5 е)2 7/48+11 77/96

Answer 1

1)=29\3+5\4=116\12+20\12=132\12=11 2)= 66\5+30\7= 462\35+150\35=612\35=17 17\35 3)= 23\10+55\9= 207\90+550\90=757\90=8 37\90 4)= 14\3+39\5= 79\15+117\15=196\15= 13 1\15 5)= 143\20+44\5= 143\20+176\20=319\20=15 19\20 6) = 103\48+1133\96=206\96+ 1133\96=1339\96=13 91\96

Answer 2

А) 9 2/3 + 1 1/4

To add these two mixed numbers, we first need to convert them to improper fractions: 9 2/3 = (39 + 2)/3 = 29/3 1 1/4 = (41 + 1)/4 = 5/4

Now we can add the fractions: 29/3 + 5/4

To add fractions with different denominators, we need to find a common denominator. In this case, the least common multiple of 3 and 4 is 12.

29/3 * 4/4 = 116/12 5/4 * 3/3 = 15/12

Now we can add the fractions with the same denominator:

116/12 + 15/12 = 131/12

So, the sum of 9 2/3 and 1 1/4 is equal to 131/12 or 10 11/12.

Б) 13 1/5 + 4 2/7

To add these two mixed numbers, we first need to convert them to improper fractions: 13 1/5 = (513 + 1)/5 = 66/5 4 2/7 = (74 + 2)/7 = 30/7

Now we can add the fractions: 66/5 + 30/7

To add fractions with different denominators, we need to find a common denominator. In this case, the least common multiple of 5 and 7 is 35.

66/5 * 7/7 = 462/35 30/7 * 5/5 = 150/35

Now we can add the fractions with the same denominator:

462/35 + 150/35 = 612/35

So, the sum of 13 1/5 and 4 2/7 is equal to 612/35 or 17 17/35.

В) 2 3/10 + 6 1/9

To add these two mixed numbers, we first need to convert them to improper fractions: 2 3/10 = (102 + 3)/10 = 23/10 6 1/9 = (96 + 1)/9 = 55/9

Now we can add the fractions: 23/10 + 55/9

To add fractions with different denominators, we need to find a common denominator. In this case, the least common multiple of 10 and 9 is 90.

23/10 * 9/9 = 207/90 55/9 * 10/10 = 550/90

Now we can add the fractions with the same denominator:

207/90 + 550/90 = 757/90

So, the sum of 2 3/10 and 6 1/9 is equal to 757/90 or 8 37/90.

Г) 4 2/3 + 7 4/5

To add these two mixed numbers, we first need to convert them to improper fractions: 4 2/3 = (34 + 2)/3 = 14/3 7 4/5 = (57 + 4)/5 = 39/5

Now we can add the fractions: 14/3 + 39/5

To add fractions with different denominators, we need to find a common denominator. In this case, the least common multiple of 3 and 5 is 15.

14/3 * 5/5 =