当x满足多少时,代数式3(1+3x)的值大于-1且不大于6?
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当x满足多少时,代数式3(1+3x)的值大于-1且不大于6?
当x满足多少时,代数式3(1+3x)的值大于-1且不大于6?
当x满足多少时,代数式3(1+3x)的值大于-1且不大于6?
-1<3(1+x)≤6
-1/3<1+x≤2
-4/3<x≤1