Question

Cách tính 8/5+3/10-1/2

Answer 1

\(\dfrac{16}{10}+\dfrac{3}{10}-\dfrac{5}{10}=\dfrac{14}{10}=\dfrac{7}{5}\)

Answer 2

`8/5+3/10-1/2=16/10+3/10-5/10=[16+3-5]/10=14/10=7/5`

Answer 3

\(\dfrac{8}{5}+\dfrac{3}{10}-\dfrac{1}{2}\)

\(=\dfrac{16+3-5}{10}=\dfrac{14}{10}=\dfrac{7}{5}\)