|a一2|与|b+5|互为相反数,求a+b的值
问题描述:
|a一2|与|b+5|互为相反数,求a+b的值
答
|a-2|与|b+5|互为相反数
|a-2| + |b+5| = 0
|a-2| = 0
|b+5| = 0
a =2
b = -5
a+b = -3