One way is to find ones or factors example 4/2=2/2 times 2/1=1 times 2/1
then we undistribute the factor we want a factor of 3x to make a one 60x=3x times 20 -3x^2=3x tiimes -x use undistributive property which is ab+ac=a(b+c) so 60x-3x=3x(20)+3x(-x)=3x(20-x) so now we have [3x(20-x)]/3x=(3x/3x) times (20-x)/1=1 times 20-x=20-x
