题目是化简这个式子吧|a| - |(a + b) + c – a| + |b – c|
∵a0,c>0
∴化简分三种情况讨论
1.当b>c时
|a| - |(a + b) + c – a| + |b – c|
=(-a) - |a +b+c-a| + (b-c)
=-a – (b+c) +b-c
=-a-b-c+b-c
=-a-2c
2.当
题目是化简这个式子吧|a| - |(a + b) + c – a| + |b – c|
∵a0,c>0
∴化简分三种情况讨论
1.当b>c时
|a| - |(a + b) + c – a| + |b – c|
=(-a) - |a +b+c-a| + (b-c)
=-a – (b+c) +b-c
=-a-b-c+b-c
=-a-2c
2.当