Question

tìm và viết kq ở dạng phân bố tối giản
a,1/6+1/3          b,1/4 + 1/8       c, -5/12 + 2/-3

Answer 1

a, \(\dfrac{1}{6}+\dfrac{1}{3}=\dfrac{1}{6}+\dfrac{2}{6}=\dfrac{3}{6}=\dfrac{1}{2}\)

b, \(\dfrac{1}{4}+\dfrac{1}{8}=\dfrac{2}{8}+\dfrac{1}{8}=\dfrac{3}{8}\)

c, \(\dfrac{-5}{12}+\dfrac{2}{-3}=\dfrac{-5}{12}+\dfrac{-8}{12}=\dfrac{-13}{12}\)

Answer 2

a, 1/6 + 1/3

= 1/6 + 2/6

= 3/6 

= 1/2

b, 1/4 + 1/8

= 2/8 + 1/8

= 3/8

c, -5/12 + 2/-3

= -5/12 - 2/3

= -5/12 - 8/12

= -13/12

Answer 3

\(a,\dfrac{1}{6}+\dfrac{1}{3}=\dfrac{1}{6}+\dfrac{2}{6}=\dfrac{3}{6}=\dfrac{1}{2}\)

\(b,\dfrac{1}{4}+\dfrac{1}{8}=\dfrac{2}{8}+\dfrac{1}{8}=\dfrac{3}{8}\)

\(c,\dfrac{-5}{12}+\dfrac{2}{-3}=\dfrac{-5}{12}+\dfrac{-2}{3}=\dfrac{-5}{12}+\dfrac{-8}{12}=\dfrac{-13}{12}\)