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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) 6926
={#blank#}1{#/blank#}
{#blank#}1{#/blank#}
{#blank#}2{#/blank#}
=( +{#blank#}1{#/blank#})+({#blank#}2{#/blank#}+{#blank#}3{#/blank#})
+ = + = - =
2- = + = - =
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