Question

Tính: A) 11/12+5/4-2/3=....   B) 4/9x6/4x3/4+5/3=.....    C) 5/7x14/11x22/15x3/5=.....   ( Đến cuối nếu chưa tối giản thì rút gọn nhé )

Answer 1

a) `11/12 + 5/4 - 2/3 = 11/12 + 15/12 - 8/12 = 18/12 = 3/2`

b) ` 4/9 xx 6/4 xx 3/4 + 5/3  = 1/2 + 5/3 = 3/6 + 10/6 = 13/6`

c) ` 5/7 xx 14/11 xx 22/15 xx 3/5 = 10/11 xx 22/25 = 4/5`

Answer 2

a: =11/12+15/12-8/12=18/12=3/2

b: \(\dfrac{4}{9}\cdot\dfrac{6}{4}\cdot\dfrac{3}{4}+\dfrac{5}{3}=\dfrac{18}{4\cdot9}+\dfrac{5}{3}=\dfrac{1}{2}+\dfrac{5}{3}=\dfrac{13}{6}\)

c: \(=\dfrac{5}{7}\cdot\dfrac{3}{5}\cdot\dfrac{14}{11}\cdot\dfrac{22}{15}=\dfrac{3}{7}\cdot2\cdot\dfrac{14}{15}=\dfrac{84}{105}=\dfrac{4}{5}\)

Answer 3

hì hì chữ mik hơi xấu tạm nhá