☆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,
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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,](/uploads/image/z/106921-1-1.jpg?t=%E2%98%86%E8%A1%A8%E7%A4%BA%E4%B8%80%E7%A7%8D%E6%96%B0%E7%9A%84%E8%BF%90%E7%AE%97%E7%AC%A6%E5%8F%B7%2C%E5%B9%B6%E4%B8%94%E8%A7%84%E5%AE%9Aa%E2%98%86b+%3D%EF%BC%88a+%2Bb%EF%BC%89%2F%EF%BC%88a-b%EF%BC%89%2C%E9%82%A3%E4%B9%88%EF%BC%8872%E2%98%8656%EF%BC%89%E2%98%866+%3D%EF%BC%88+%E2%98%86%E8%A1%A8%E7%A4%BA%E4%B8%80%E7%A7%8D%E6%96%B0%E7%9A%84%E8%BF%90%E7%AE%97%E7%AC%A6%E5%8F%B7%2C%E5%B9%B6%E4%B8%94%E8%A7%84%E5%AE%9Aa%E2%98%86b+%3D%EF%BC%88a+%2Bb%EF%BC%89%2F%EF%BC%88a-b%EF%BC%89%2C%E9%82%A3%E4%B9%88%EF%BC%8872%E2%98%8656%EF%BC%89%E2%98%866+%3D%EF%BC%88+%EF%BC%89%E5%90%8E%E9%9D%A2%E6%8C%82%E5%8F%B7%E9%87%8C%E5%BA%94%E8%AF%A5%E5%A1%AB%E4%BB%80%E4%B9%88%E6%95%B0%2C)
☆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,
☆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,
☆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,
(72☆56)☆6
=[(72+56)/(72-56)]☆6
=8☆6
=(8+6)/(8-6)
=14/2
=7
((72+56)/(72-56)+6)/((72+56)/(72-56)-6) =7
是7
8
=(72+56)/(72-56)☆6
=8☆6
=(8+6)/(8-6)
=14/2
=7
7
((72+56)/(72-56)+6)/((72+56)/(72-56)-6) =7