解(-3/5)^99*(-5/3)^100
=(-3/5)^99*(-5/3)^99*(-5/3)
=[(-3/5)*(-5/3)]^99*(-5/3)
=(1)^99*(-5/3)
=-5/3
原式=-(3/5)^99*(5/3)^99*5/3
=-(3/5*5/3)^99*5/3
=-1*5/3
=-5/3
(-3/5)^99*(-5/3)^100
=(-3/5)^99*(-5/3)^99*(-5/3)
=[(-3/5)*(-5/3)]^99*(-5/3)
=1*(-5/3)
= -5/3