A<B . K CHO MÌNH NHA

 vi 53/53.107 =1/107 nenA > 54.107+54 < 135.269 < B

nhanh len nhe ngay mai thi roi

Ta thấy :

A=\(\frac{54.107-53}{53.107+54}=\frac{53.107+107-53}{53.107+54}=\frac{53.107+54}{53.107+54}=1\)

B=\(\frac{135.269-133}{134.269+135}=\frac{134.269+269-133}{134.269+135}=\frac{134.269+136}{134.269+135}>1\)

Vậy A < B

\(A=\frac{54\cdot107-53}{53\cdot107+54}=\frac{\left(53+1\right)107-53}{53\cdot107+54}=\frac{53\cdot107+107-53}{53\cdot107+54}=\frac{53\cdot107+54}{53\cdot107+54}=1\)

\(B=\frac{135\cdot268-133}{134\cdot269+135}=\frac{\left(134+1\right)\cdot268-133}{134\cdot269+135}=\frac{134\cdot268+268-133}{34\cdot269+135}=\frac{134\cdot268+135}{134\cdot269+135}=1\)

Vì 1=1 nên A=B

ban tra loi viet de sai roi 269 ma viet thanh 268

A=B

quá dễ

\(A=\frac{53.107+107-53}{53.107+54}=\frac{53.107+54}{53.107+54}=1\)

\(B=\frac{134.269+269-133}{134.269+135}=\frac{134.269+136}{134.269+135}>1\)

=> A < B