ta có: 10A = \(\frac{10^{2017}+1+9}{10^{2017}+1}=1+\frac{9}{10^{2017}+1}\)
10B = \(\frac{10^{2018}+1+9}{10^{2018}+1}=1+\frac{9}{10^{2018}+1}\)
\(vì\frac{9}{10^{2017}+1}>\frac{9}{10^{2018}+1}\) => 10A > 10B => A > B
A > B nhé bn!!!!!!!!!!!!!!
6578
nhân A va B voi 10 va rut gon ta co;
9/ 102017+1 > 9/102018 +1
vay A > B