4x=21*96/72
4x=28
x=28/4
x=7
0.36/0.8x=0.105/0.63
9x/20=1/6
9x*6=20*1
9x*6/54=20*1/54
x=20*1/54
x=10/27
4x=21*96/72
4x=28
x=28/4
x=7
0.36/0.8x=0.105/0.63
9x/20=1/6
9x*6=20*1
9x*6/54=20*1/54
x=20*1/54
x=10/27