|a+b|+|c-a|-|b|化简

更新时间2019-09-14 18:38:28

| a+b |+| c-a |- |b|化简

a=4

b=-4

c=-1

｜a+b|+|c-a|-|b|

=|4+(-4)|+|-1-4|-|-4｜

=|0|+|-5|-|-4|

=0+5-4

=1