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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) 6930
=
{#blank#}2{#/blank#}
- ={#blank#}1{#/blank#} + ={#blank#}2{#/blank#} - ={#blank#}3{#/blank#} - ={#blank#}4{#/blank#}
+ = {#blank#}5{#/blank#} - = {#blank#}6{#/blank#} - = {#blank#}7{#/blank#} + ={#blank#}8{#/blank#}
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