Question

quy đồng mẫu các phân số sau -7/12  -11/18

Answer 1

MSC: 36

\(-\dfrac{7}{12}=-\dfrac{7\times3}{12\times3}=\dfrac{21}{36}\)

\(-\dfrac{11}{18}=-\dfrac{11\times2}{18\times2}=-\dfrac{22}{36}\)

Answer 2

MC = BCNN(12,18)=36

-7/12=-7/12×3/3=-21/36

-11/18=-11/18×2/2=-22/36