51.6÷【(3.4-12.5)×0.8】原来解答那个人给错答案了

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51.6÷【(3.4-12.5)×0.8】原来解答那个人给错答案了

51.6÷【(3.4-12.5)×0.8】原来解答那个人给错答案了
51.6÷【(3.4-12.5)×0.8】
原来解答那个人给错答案了

51.6÷【(3.4-12.5)×0.8】原来解答那个人给错答案了
先打括号,51.6/(3.4×0.8-12.5×0.8)=2.72-10
=51.6/(-7.28)
=-645/91

原式=51.6÷{-9.1*0.8}
=51.6÷-7.28
=44.32

51.6/(-9.1*0.8)
51.6/(-7.28)
-645/91