Question

cho A = 196/197 + 197/198      ;         B= 196+197/197+198

so sánh A và B

Answer 1

Do \(\frac{196}{197}>\frac{196}{197+198}\)

      \(\frac{197}{198}>\frac{197}{197+198}\)

\(\Rightarrow\frac{196}{197}+\frac{197}{198}>\frac{196}{197+198}+\frac{197}{197+198}=\frac{196+197}{197+198}\)

Vậy A > B

Answer 2

\(A=\frac{196}{197}+\frac{197}{198}\)và \(B=\frac{196+197}{197+198}\)

\(B=\frac{196}{197+198}+\frac{197}{197+198}\)

\(\frac{196}{197}>\frac{196}{197+198}\)và \(\frac{197}{198}>\frac{197}{197+198}\)

\(\Rightarrow A>B\)