Question 74349
{{{9r+15<24+10r}}}
{{{cross(9r-9r)+15<24+10r-9r}}}Subtract 9r from both sides
{{{15-24<cross(24-24)+10r-9r}}}Subtract 24 from both sides
{{{-9<r}}}
So any number greater than -9 will work if it's plugged into the inequality.