\(\dfrac{2017}{2019}=1-\dfrac{2}{2019}\\ \dfrac{2015}{2017}=1-\dfrac{2}{2017}\\ Vì:\dfrac{2}{2019}< \dfrac{2}{2017}\Rightarrow1-\dfrac{2}{2019}>1-\dfrac{2}{2017}\\ \Rightarrow\dfrac{2017}{2019}>\dfrac{2015}{2017}\)
\(\dfrac{2017}{2019}=1-\dfrac{2}{2019}\\ \dfrac{2015}{2017}=1-\dfrac{2}{2017}\\ Vì:\dfrac{2}{2019}< \dfrac{2}{2017}\Rightarrow1-\dfrac{2}{2019}>1-\dfrac{2}{2017}\\ \Rightarrow\dfrac{2017}{2019}>\dfrac{2015}{2017}\)
so sánh: 2018^2019-2018^2017 và 2018^2017-2018^2015
So sánh \(\frac{2017}{2018}+\frac{2018}{2019}và\frac{2015}{2016}+\frac{2016}{2017}\)
\(\frac{7^{2015}+1}{7^{2017}+1}\)và\(\frac{7^{2017}+1}{7^{2019}+1}\)
Hãy so sánh
So sánh:
a] 120 / 115 và 175 / 170
b ] 75 / 79 và 83 / 87
c ] A = 2015 + 2016 / 2016 + 2017 và B= 2015+2016+2017 / 2017+ 2018 + 2019
so sánh : P = 2016/2017 + 2017/2018 + 2018/2019 và Q = 2016 + 2017 + 2018/2017 + 2018 + 2019
So sánh hai phân số
A=2017/2018+2018/2019+2019/2020 và B=(2017+2018+2019)/(2018+2019+2020)
so sánh A=2017+2018 /2018+2019 và B=2017/2018+2018/2019
so sánh
P=2015/2016+2016/2017+2017/2018 và Q=2015+2016+2017/2016+2017+2018
A=2017+2018/2018+2019 và B = 2017/2018+2018/2019
So Sánh