1;2;3;6;9;12;24;57;114

2.takes vitamins

3.keep warm

4.get some sleep

5.unhealthy

6.eat fruit and vegetables

7.has a sore throat

8.take your medicine 

\(\dfrac{12}{35}+\dfrac{41}{28}=\dfrac{253}{140}\)

\(\dfrac{-2}{5}+\left(\dfrac{4}{6}-\dfrac{1}{15}\right)-\dfrac{-1}{10}\\ =\dfrac{-2}{5}+\dfrac{3}{5}+\dfrac{1}{10}\\ =\dfrac{1}{5}+\dfrac{1}{10}\\ =\dfrac{3}{10}\\ \dfrac{1}{2}-\left(\dfrac{-7}{3}+\dfrac{2}{5}\right)+\dfrac{1}{8}\\ =\dfrac{1}{2}+\dfrac{29}{15}+\dfrac{1}{8}\\ =\dfrac{73}{30}\\ =\dfrac{73}{30}+\dfrac{1}{8}\\ =\dfrac{307}{120}\)

2. on TV

\(0,17\times250+63\times1,7-87\times1,7\\ =1,7\times25+63\times1,7-87\times1,7\\ =1,7\times\left(25+63-87\right)\\ =1,7\times1\\ =1,7\)

cái gì đấy