1.求绝对值 -(-3)+a(a大于等于3) |x-(+6)|(x小于等于6)

问题描述:

1.求绝对值 -(-3)+a(a大于等于3) |x-(+6)|(x小于等于6)

|-(-3)+a|(a大于等于3)
=|3+a|
=3+a
|x-(+6)|(x小于等于6)
=|x-6|
=6-x