Question

find the difference between the greatest and the least number in -5/9,-1/8,-7/9​

Answer 1

$\frac{ - 5}{9} , \frac{ - 1}{8} , \frac{ - 7}{9} \\lcm = 72 \\ \frac{ - 5}{9} \times \frac{8}{8} = \frac{ - 40}{72} \\ \frac{ - 1}{8} \times \frac{9}{9} = \frac{ - 9}{72} \\ \frac{ - 7}{9} \times \frac{8}{8} = \frac{ - 56}{72} \\\frac{ - 40}{72} ,\frac{ - 9}{72},\frac{ - 56}{72} \\ the \: greatest \: number \: is\: \frac{ - 9}{72} \\ the \: least \: number \: is \: \frac{ - 56}{72} \\ \frac{ - 9}{72} - (\frac{ - 56}{72}) \\ = \frac{ - 9}{72} + \frac{ 56}{72} \\ = \frac{ - 9 + 56}{72} \\ = \frac{45}{72}$