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☆表示一种新的运算符号,并且规定a☆b =(a +b)/(a-b),那么(72☆56)☆6 =(
☆表示一种新的运算符号,并且规定a☆b =(a +b)/(a-b),那么(72☆56)☆6 =( )后面挂号里应该填什么数,
人气:317 ℃ 时间:2020-02-10 02:33:55
解答
(72☆56)☆6
=[(72+56)/(72-56)]☆6
=8☆6
=(8+6)/(8-6)
=14/2
=7
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