1.=(-1/3)*(-7)*3/2
=7/3*3/2
=7/2
2.=(-3/7)*1/8*(-4/3)*(-8)
=-(4/7)
3.=(-9/2)*(-1/8)*(-8)
=-(9/2)
4.=(1/3-2/4-1/4-1/5)*(-20)
=(1/3-3/4-1/5)*(-20)
=(20/60/-45/60-12/60)*(-20)
=(-37/60)*(-20)
=37/3
5.=
1.=(-1/3)*(-7)*3/2
=7/3*3/2
=7/2
2.=(-3/7)*1/8*(-4/3)*(-8)
=-(4/7)
3.=(-9/2)*(-1/8)*(-8)
=-(9/2)
4.=(1/3-2/4-1/4-1/5)*(-20)
=(1/3-3/4-1/5)*(-20)
=(20/60/-45/60-12/60)*(-20)
=(-37/60)*(-20)
=37/3
5.=