#1/2x+2=3/5 //*10#
#10*1/2x+10*2=10*3/5#
#color(green)5color(red)cancel10*1/color(red)cancel2x+20=color(green)2color(red)cancel10*3/color(red)cancel5#
#5x+20=6#
#5x=6-20#
#5x=-14// -:5#
#(5x)/5=-14/5#
#(color(red)cancel5x)/color(red)cancel5=-14/5#
#x=-14/5#