Answer:
first
|a+3|/2=1
|a+3|=1*2
|a+3|=2
a=2-3
so,a=-1
second
2|b+1|=6
|b+1|=6/2
|b+1|=3
b=3-1
so,b=2
now,|a+b|
= -1+2
= 1
therefore,|a+b|= 1
5.1m questions
6.7m answers