Question 985489

{{{2p+5r=q}}}....to solve for {{{p}}}, isolate {{{p}}} on one side and everything else on the other side of equal sign 

{{{2p+5r-5r=q-5r}}}

{{{2p=q-5r}}}

{{{2p/2=(q-5r)/2}}}

{{{p=(q-5r)/2}}}