(1)9/4*(-6/7)/(1/2-2)=?(2)(-16-50+17/5)/(-2)=?
问题描述:
(1)9/4*(-6/7)/(1/2-2)=?(2)(-16-50+17/5)/(-2)=?
答
(1)9/4*(-6/7)/(1/2-2)
=9/4*(-6/7)/(-3/2)
=81/28
(2)(-16-50+17/5)/(-2)
=(-66+17/5)/(-2)
=(-313/5)/(-2)
=313/10