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题型:填空题 题类:常考题 难易度:普通
异分母分数加、减法(不含带分数) 6927
5― ― =
= {#blank#}1{#/blank#} ={#blank#}2{#/blank#} ={#blank#}3{#/blank#} ={#blank#}4{#/blank#}
+ = - = - = 1- = - =
- = + = 1- = + = - =
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