6x*9=5*9 5x*8=10*6 5x*6=9*6 x*6=5*3
x=9*5/6*9 x=8*10/6*5 x=6*9/6*5 x=6*5/3
x=5/6 x=4*2/3 x=9/5 x=10
x=8/3
