Question

tinh nhanh 4/5 nhan 3/5 cong 4/5 nhan 6/7 tru 4/14 nhan 1/5

Answer 1

194/175

Answer 2

co ai giai giup  minh voi please!

Answer 3

ban oi cu the

Answer 4

\(\frac{4}{5}\cdot\frac{3}{5}+\frac{4}{5}\cdot\frac{6}{7}-\frac{4}{14}\cdot\frac{1}{5}=\frac{4}{5}\cdot\left(\frac{3}{5}+\frac{6}{7}\right)-\frac{4}{14}\cdot\frac{1}{5}=\frac{4}{5}\cdot\frac{51}{35}-\frac{4}{14}\cdot\frac{1}{5}=\frac{204}{175}-\frac{2}{35}=\frac{194}{175}\)