Question

tinh bang cach thuan tien nhat: 20/11x33/23x69/180

Answer 1

\(\frac{20}{11}\times\frac{33}{23}\times\frac{69}{180}\)

 = \(\frac{20}{11}\times\frac{33}{23}\times\frac{69}{180}=\frac{20\times33\times69}{11\times23\times180}\)\(=\frac{1\times3\times3}{1\times1\times9}=\frac{9}{9}=1\)

k mk nha Nguyễn Lê Tiểu Long

Answer 2

20*33*69=20*11*3*23*3=3*3=9

11*23*180=11*23*20*9=9=9

=1

Answer 3

\(\frac{20}{11}\cdot\frac{33}{23}\cdot\frac{69}{180}=\frac{20\cdot33\cdot69}{11\cdot23\cdot180}=\frac{20\cdot11\cdot3\cdot23\cdot3}{11\cdot23\cdot20\cdot9}=\frac{3\cdot3}{9}=\frac{9}{9}=1\)