\(\frac{2}{9}+\frac{3}{7}+\frac{16}{9}+\frac{4}{7}\)
\(=\left(\frac{2}{9}+\frac{16}{9}\right)+\left(\frac{3}{7}+\frac{4}{7}\right)\)
\(=2+1=3\)
\(\frac{3}{5}\times\frac{5}{9}+\frac{3}{4}\times\frac{4}{9}\)
\(=\frac{1}{3}+\frac{1}{3}=\frac{2}{3}\)
bài 1 So sánh
327/326 và 326/325
\(\frac{2}{9}\)+\(\frac{3}{7}\)+\(\frac{16}{9}\)+\(\frac{4}{7}\)=\(\frac{731}{189}\)
\(\frac{3}{5}\)x\(\frac{5}{9}\)+ 34 x\(\frac{4}{9}\)=\(\frac{103}{3}\)