Question

[Mạc Nhược Khánh Nghi]

a) 1/2 + 1/3 + 1/6 =

b) 1/2 - 1/3 - 1/6 =

c) 1/2 x 2/3 x 3/4 =

d) 1/2 : 2/3 : 3/4 =

Answer 1

[lê văn hải]

\(a,\frac{1}{2}+\frac{1}{3}+\frac{1}{6}=\frac{5}{6}+\frac{1}{6}=1.\)

\(b,\frac{1}{2}-\frac{1}{3}-\frac{1}{6}=\frac{1}{6}-\frac{1}{6}=0.\)

\(c,\frac{1}{2}x\frac{2}{3}x\frac{3}{4}=\frac{1}{3}x\frac{3}{4}=\frac{1}{4}.\)

\(d,\frac{1}{2}:\frac{2}{3}:\frac{3}{4}=\frac{3}{4}:\frac{3}{4}=1.\)

Answer 2

[Sooya]

a) 1/2 + 1/3 + 1/6 = 3/6 + 2/6 + 1/6 = 6/6 = 1

b) 1/2 - 1/3 - 1/6 = 3/6 - 2/6 - 1/6 = 0/6

c) 1/2 x 2/3 x 3/4 =1 x 2 x 3 / 2 x 3 x 4 = 6/24 = 1/4

d) 1/2 : 2/3 : 3/4 = 1/2 x 3/2 x 4/3 =1 x 3 x 4/ 2 x 2 x 3 = 12/12 = 1