Question

1.Tính hợp lí(nếu có thể)

a) 5871:[928-(247-82).5]

Answer 1

\(=5871:\left[928-165\cdot5\right]\\ =5871:\left[928-825\right]=5871:103=57\)

Answer 2

\(=5871:\left[928-165.5\right]=5871:\left[928-825\right]=5871:103=57\)

Answer 3

a,=5871:[928-165.5]

   = 5871:[928-825]

   = 5871:103

   =  57