数学
15-(1-(-20-4))等于多少?

2020-02-17

15-(1-(-20-4))等于多少?
优质解答
15-(1-(-20-4))
=15-(1-(-24))
=15-(1+24)
=15-25
=-10
15-(1-(-20-4))
=15-(1-(-24))
=15-(1+24)
=15-25
=-10
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