Question

três sextos vezes quatro quintos ​

Answer 1

3/6 x 4/5 = 12/30 = 2/5

Answer 2

$\frac{ {3}^{ \div 3} }{ {6}^{ \div 3} } \times \frac{4}{5} = \frac{1}{2} \times \frac{4}{5} = \frac{1 \times 4}{2 \times 5} = \frac{ {4}^{ \div 2} }{ {10}^{ \div 2} } = \frac{2}{5}$