Question

[Thanh bestlauriel]

2/3+2-5/6

3-6/5+7/10

16/11-1+3/22

Answer 1

[Nguyễn Thị Thương Hoài]

   \(\dfrac{2}{3}\) + 2 - \(\dfrac{5}{6}\)

= \(\dfrac{4}{6}\) + \(\dfrac{12}{6}\) - \(\dfrac{5}{6}\)

= \(\dfrac{16}{6}\) - \(\dfrac{5}{6}\)

= \(\dfrac{11}{6}\)

3 - \(\dfrac{6}{5}\) + \(\dfrac{7}{10}\)

= \(\dfrac{15}{5}\) - \(\dfrac{6}{5}\) + \(\dfrac{7}{10}\)

= \(\dfrac{9}{5}\) + \(\dfrac{7}{10}\)

= \(\dfrac{18}{10}\) + \(\dfrac{7}{10}\)

= \(\dfrac{25}{10}\)

= \(\dfrac{5}{2}\)

\(\dfrac{16}{11}\) - 1 + \(\dfrac{3}{22}\)

= \(\dfrac{16}{11}\) - \(\dfrac{11}{11}\) + \(\dfrac{3}{22}\)

= \(\dfrac{5}{11}\) + \(\dfrac{3}{22}\)

= \(\dfrac{10}{22}\) + \(\dfrac{3}{22}\)

= \(\dfrac{13}{22}\)

Answer 2

[Phi Hiệp Nguyễn]

2/3+2-5/6=2 4/6-5/6

               =16/6-5/6=11/6

3-6/5+7/10=15/5-6/5 +7/10

.                =9/5+7/10

                 =21/10

16/11-1+3/22=16/11-11/11+3/22

                     =5/11+3/22

                     =13/22