{{..Easy的Maths problem..]]|X-Y|-|Y-X|=?
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{{..Easy的Mathsproblem..]]|X-Y|-|Y-X|=?{{..Easy的Mathsproblem..]]|X-Y|-|Y-X|=?{{..Easy的Mathsproblem..]
{{..Easy的Maths problem..]]|X-Y|-|Y-X|=?
{{..Easy的Maths problem..]]
|X-Y|-|Y-X|=?
{{..Easy的Maths problem..]]|X-Y|-|Y-X|=?
|X-Y|-|Y-X|
=X-Y-(X-Y)=0
无论x大还是Y大,绝对值总是相等,相减=0
|X-Y|-|Y-X|
=|X-Y|-|-(X-Y)|
=|X-Y|-|X-Y|
=0
0
easy maths
easy maths
{{..Easy的Maths problem..]]|X-Y|-|Y-X|=?
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