((3/8 - 5/6) : 3/4 + (-3/8 - 7/20) : 1 9/20) * 1/50 = - 1/45
1) 3/8 - 5/6 = 9/24 - 20/24 = - 11/24
2) - 11/24 : 3/4 = (-11/24) * 4/3 = - (11*1)/(6*3) = - 11/18
3) - 3/8 - 7/20 = - 15/40 - 14/40 = - 29/40
4) - 29/40 : 1 9/20 = - 29/40 : 29/20 = - 29/40 * 20/29 = - 20/40 = - 1/2
5) - 11/18 + (-1/2) = - 11/18 - 9/18 = - 20/18
6) - 20/18 * 1/50 = - (2*1)/(18*5) = - 2/90 = - 1/45
7/8>3/4
6/25<1/4
7/5<3/2
5/6>5/8
2/3<13/15
3/10<7/12
5/12<3/4
2/5>3/8
7/15<3/5
1/2*1/2=1/4
1.1/2=3/2
1/4*2/3=1/6