【(-4)-(+7)】-(-5),3-【(-3)-12】,8-(9-10),(3-5)-(6-10)算式是什么?
问题描述:
【(-4)-(+7)】-(-5),3-【(-3)-12】,8-(9-10),(3-5)-(6-10)算式是什么?
答
[(-4)-(+7)]-(-5)
=-4-7+5
=-11+5
=-6
3-[(-3)-12]
=3+3+12
=18
8-(9-10)
=8-9+10
=-1+10
=10-1
=9
(3-5)-(6-10)
=-2-(-4)
=-2+4
=4-2
=0