Question

a, \(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0.5+\frac{16}{21}\)

Answer 1

\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)

\(=\frac{27}{23}+\frac{5}{21}-\frac{4}{23}+\frac{1}{2}+\frac{16}{21}\)

\(=\left(\frac{27}{23}-\frac{4}{23}\right)+\left(\frac{5}{21}+\frac{16}{21}\right)+\frac{1}{2}\)

\(=\frac{23}{23}+\frac{21}{21}+\frac{1}{2}\)

\(=1+1+\frac{1}{2}\)

\(=\frac{5}{2}\)

Answer 2

5^2 bạn ơi

Answer 3

27/23+5/21-4/23+1/2+16/21=(27/23-4/23)+(5/21+16/21)+1/2

                                            =1+1+1/2

                                            =5/2

các bạn thấy hợp lý thì k đúng cho mình nhé........yêu các bạn nhiều