( )の中、(2/3)－(1/6)＋(1/9)＝11/18
{ }の中、(3/4)－(11/18)÷(1/3)＝(3/4)－(11/6)＝－13/12
与式、13÷(－13/12)＝－12
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( )の中、(2/3)－(1/6)＋(1/9)＝11/18
{ }の中、(3/4)－(11/18)÷(1/3)＝(3/4)－(11/6)＝－13/12
与式、13÷(－13/12)＝－12
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are also looking at these questions 😉
