# How do you simplify the ratio 10.4 to 8.4?

$\frac{26}{21}$
$\frac{10.4 \times 10}{8.4 \times 10} = \frac{104}{84}$
Common factor is 4$\to$ see prime factor tree diagram
$\frac{104 \div 4}{84 \div 4} = \frac{26}{21}$