Question

bài 2: tính

a) 3/4 + 2/3 + 5/12                            b) 7/8 - 7/16 -11/32

c) 3/5 x 2/7 x 5/6                               d) 15/16 : 3/8 x 3/4

Answer 1

a: =9/12+8/12+5/12=22/12=11/6

b: =28/32-14/32-11/32=3/32

c: \(\dfrac{3}{5}\cdot\dfrac{2}{7}\cdot\dfrac{5}{6}=\dfrac{1}{7}\)

d: \(=\dfrac{15}{16}\cdot\dfrac{8}{3}\cdot\dfrac{3}{4}=\dfrac{15}{16}\cdot2=\dfrac{15}{8}\)

Answer 2

a) 11/6

b) 3/32

c) 1/7

d) 15/8