Question

So Sánh các phân số sau

a) \(\frac{19}{18}\)và \(\frac{2014}{2015}\)

b)\(\frac{7}{8}\)và \(\frac{210}{243}\)

Answer 1

19/18<2014/2015

70/80=70/80

rut gon roi so sanh

Answer 2

a)\(\frac{19}{18}\)>\(\frac{2014}{2015}\)vì \(\frac{19}{18}\)>1 ;\(\frac{2014}{2015}\)<1

b) Ta có:\(\frac{7}{8}\)=\(\frac{70}{80}\) ;\(\frac{210}{243}\)=\(\frac{70}{81}\)

=> \(\frac{7}{8}\)>\(\frac{210}{243}\)

Answer 3

a) VÌ \(\frac{19}{18}\)LỚN HƠN 1 MÀ \(\frac{2014}{2015}\)BÉ HƠN 1 NÊN SUY RA \(\frac{19}{18}>\frac{2014}{2015}\)

B)TA CÓ : \(\frac{7}{8}=\frac{7.30}{8.30}=\frac{210}{240}\)

                  VÌ \(\frac{210}{240}>\frac{210}{243}\Rightarrow\frac{7}{8}>\frac{210}{243}\)

Answer 4

k cho mik