Question

A)1/9+2/3 b)7/8-1/3 c)2 1/5+3/4 d)2-1 3/7

Answer 1

А) 1/9+2/3=1/9+6/9=7/9
b)7/8-1/3=21/24-8/24=13/24
c)2 1/5+3/4=2 4/20+15/20=2 19/20
d)2-1 3/7=2/1-10/7=14/7-10/7=4/7

Answer 2

A) 1/9 + 2/3 To add these fractions, we need to find a common denominator. The least common denominator for 9 and 3 is 9. So we need to rewrite the fractions with a denominator of 9. 1/9 + 6/9 = 7/9

B) 7/8 - 1/3 To subtract these fractions, we also need to find a common denominator. The least common denominator for 8 and 3 is 24. So we need to rewrite the fractions with a denominator of 24. 21/24 - 8/24 = 13/24

C) 2 + 1/5 + 3/4 To add these mixed numbers and fractions, we first need to convert the mixed numbers to improper fractions. 2 + 1/5 = 10/5 + 1/5 = 11/5 Now we can add the fractions: 11/5 + 3/4 To add these fractions, we need to find a common denominator. The least common denominator for 5 and 4 is 20. So we need to rewrite the fractions with a denominator of 20. 44/20 + 15/20 = 59/20

D) 2 - 1 + 3/7 First, we subtract 1 from 2: 2 - 1 = 1 Now we add 1 to 3/7: 1 + 3/7 To add these mixed numbers and fractions, we first need to convert the mixed number to an improper fraction. 1 + 3/7 = 7/7 + 3/7 = 10/7