page one step two=. 5x=15
page one step three=. 5x/5=15/5
page one step four=. x=3
page two step one=. 6n+3-3=9-3
page two step two=. 6n=6
page two step three=. n=1
page three step one=. m/3+4-4=7-4
page three step two=. m/3=3
page three step three=. m/3*3=4*3
page three step four=. m=9