Question

  tính

D= 1/2 + 1/3 +1 /4

Answer 1

\(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}=\frac{6}{12}+\frac{4}{12}+\frac{3}{12}=\frac{13}{12}\)

Answer 2

\(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\)

\(=\frac{5}{6}+\frac{1}{4}\)

\(=\frac{13}{12}\)

Answer 3

1/2 + 1/3 + 1/4

= 5/6 + 1/4

= 13/12

Answer 4

1/2+1/3+1/4

=6/12+4/12+3/12

=13/12

Answer 5

\(D=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\)

\(D=\frac{5}{6}+\frac{1}{4}\)

\(D=\frac{13}{12}\) nha bạn    Bùi Thị Ngọc Anh

Answer 6

D=\(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}=\frac{6+4+3}{12}=\frac{13}{12}\)

chopper

Answer 7

D=1/2+1/3+1/4

D=5/6+1/4

D=26/24=13/12