Question

1.Tính rồi rút gọn

3/5 + 4/6 =

7-1/3 =

5 x 3/8 =

12/35 : 2/5 =

Sos gấp nha

Answer 1

3/5+4/6=3/5+2/3=9/15+10/15=19/15

7-1/3=20/3

5x3/8=15/8

12/35:2/5=12/35x5/2=60/70=6/7

Answer 2

\(\dfrac{3}{5}+\dfrac{4}{6}=\dfrac{3}{5}+\dfrac{2}{3}=\dfrac{19}{15}\)
\(7-\dfrac{1}{3}=\dfrac{20}{3}\)
\(5x\dfrac{3}{8}=\dfrac{15}{8}\)
\(\dfrac{12}{35}:\dfrac{2}{5}=\dfrac{12}{35}x\dfrac{5}{2}=\dfrac{6}{7}\)