Question

已知a=-1,|-b|=|-2分之1|,c=|-8|-|-2分之1|,求-a-b-c

Answer 1

a=-1,

|-b|=|-2分之1| ,b=±1/2

,c=|-8|-|-2分之1|,得 c=8-1/2=7又1/2

-a-b-c

=-1+1/2+7又1/2

=7

-a-b-c

=-1-1/2+7又1/2

=6