Question 334915
{{{(3r)/4-(2r-1)18=3/2}}}
Multiply both sides by 4.
{{{3r-(2r-1)72=6}}}
{{{3r-(144r-72)=6}}}
{{{3r-144r+72=6}}}
{{{-141r=-66}}}
{{{r=66/141}}}
{{{highlight(r=22/47)}}}