Question

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

Answer 1

A = -1,

í-BI = I-1/2 I,B = 1

C = I-8I-I-1 / 2I = 8-1 / 2 = 15/2 BR /> - ABC = 1-1 / 2-15 / 2 = -7