7-4(x-3)≤2(x-1)
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7-4(x-3)≤2(x-1)
7-4(x-3)≤2(x-1)
7-4(x-3)≤2(x-1)
7-4x+12≤2x-2
6x≥21
x≥21/6
答案是
收起
答案是21/6<等于x,嘻嘻,过程就没有咯,亲~~~
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