Question 330493
{{{-8/15+r=-10/9}}}
{{{-8/15+8/15+r=-10/9+8/15}}}
Use the common denominator {{{45}}}.
{{{0+r=-(10/9)(5/5)+(8/15)(3/3)}}}
{{{r=-50/45+24/45}}}
{{{highlight(r=-26/45)}}}