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题型:填空题 题类:常考题 难易度:容易
异分母分数加、减法(不含带分数) 6940
+ ={#blank#}1{#/blank#}
+ ={#blank#}2{#/blank#}
{#blank#}1{#/blank#}
=
+ = - = + = 2- =
- = + = + - = 3- - =
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