Question

Hãy so sánh A và B:  \(A=\frac{98}{99};B=\frac{98\cdot99+1}{98\cdot99}\)

Answer 1

98   <1

99

98.99+1     Vì 98.99+1 >98.99 nên 98.99+1   >1

98.99                                             98.99

Suy  ra: 98     <    98.99+1  

            99            98.99

              

Answer 2

A= \(\frac{98}{99}\)< \(1\)

B= \(\frac{98.99+1}{98.99}\)=\(\frac{98.99}{98.99}+\frac{1}{98.99}\)=\(1+\frac{1}{98.99}\)> 1

=> A<1<B => A<B