Question

[Le Tien Thanh]

cho so co 3 chu so abc biet c -a= 4.tinh ket qua cua phep tinh cba - abc=...

Answer 1

[Nobi Nobita]

Ta có: \(\overline{cba}-\overline{abc}=\left(100\times c+10\times b+a\right)-\left(100\times a+10\times b+c\right)\)

\(=100\times c+10\times b+a-100\times a-10\times b-c\)

\(=99\times c-99\times a=99\times\left(c-a\right)=99\times4=396\)