Question

Rút gọn:10*11+50*55+70*77/11*12+55*60+77*84

Answer 1

\(=\dfrac{10\cdot11+25\cdot10\cdot11+49\cdot10\cdot11}{11\cdot12+25\cdot11\cdot12+49\cdot11\cdot12}=\dfrac{10\cdot11}{11\cdot12}=\dfrac{10}{12}=\dfrac{5}{6}\)

Answer 2

5/6