đọc nhanh z bn 

I take medicine when I have a fever.

Because taking medicine will reduce my fever.

\(1.\)You shouldn't eat so much candy

\(2.\)You should take medicine

\(3.\)You shouldn't eat junk food

\(5.\)You should take an eye test

\(6.\)You shouldn't sit down all day

\(7.\)You should eat something

\(\dfrac{7}{11}+\dfrac{-9}{2}-\dfrac{5}{-3}+1\)

\(=\dfrac{7}{11}+\dfrac{-9}{2}-\dfrac{-5}{3}+1\)

\(=\dfrac{14}{22}+\dfrac{-99}{22}-\dfrac{-5}{3}+1\)

\(=\dfrac{-85}{22}-\dfrac{-5}{3}+1\)

\(=\dfrac{-255}{66}-\dfrac{-110}{66}+1\)

\(=\dfrac{-145}{66}+1\)

\(=-\dfrac{79}{66}\)

Cách 1 : 

\(321\times32+321\times68\)

\(=10272+321\times68\)

\(=10272+21828\)

\(=32100\)

Cách 2 : 

\(321\times32+321\times68\)

\(=321\times\left(32+68\right)\)

\(=321\times100\)

\(=32100\)