Question

if p/q=(2/5)-2/(3/7) find value of (p/q)-1​

Answer 1

$\LARGE\star\mathfrak{\underline{\underline{\red{answer: }}}}$

$\sf{ \frac{p}{q} = \frac{2}{5} - \frac{2}{ \frac{3}{7} } } \\ \\ \sf{ \frac{p}{q} = \frac{2}{5} - \frac{14}{3} } \\ \\ \sf{ \frac{p}{q} = \frac{6 - 70}{15} } \\ \\ \sf{ \frac{p}{q} = \frac{ - 64}{15} \: \: \: \: \: \: }$

To find :-

$\sf{ \frac{p}{q} - 1 } \\ \\ \sf{= - \frac{64}{15} - 1 } \\ \\ \sf{ = \frac{ - 64 - 15}{15} } \\ \\ \sf{ = \bold{\frac{ - 79}{15} }}$