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急阿!(-61)-(-71)—丨-8丨-(-2)=8-(9-10)[(-4)-(+7)]-(-5)3-[(-3)-(+12)]
题目详情
急阿!(-61)-(-71)—丨-8丨-(-2)=
8-(9-10) [(-4)-(+7)]-(-5) 3-[(-3)-(+12)]
8-(9-10) [(-4)-(+7)]-(-5) 3-[(-3)-(+12)]
▼优质解答
答案和解析
(-61)-(-71)—丨-8丨-(-2)
= - 61 + 71 - 8 + 2
= 10 - 8 + 2
= 4
8-(9-10)
= 8 -(-1)
= 8 + 1
= 9
[(-4)-(+7)]-(-5)
= - 11 + 5
= -6
3-[(-3)-(+12)]
= 3 - [ - 3 - 12]
= 3 - [- 15]
= 3+15
= 18
= - 61 + 71 - 8 + 2
= 10 - 8 + 2
= 4
8-(9-10)
= 8 -(-1)
= 8 + 1
= 9
[(-4)-(+7)]-(-5)
= - 11 + 5
= -6
3-[(-3)-(+12)]
= 3 - [ - 3 - 12]
= 3 - [- 15]
= 3+15
= 18
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