2[3(5x-1)-8]-7=1
问题描述:
2[3(5x-1)-8]-7=1
答
2[3(5x-1)-8]-7=1
2[3(5X-1)-8]=7+1;
3(5X-1)-8=4;
3(5X-1)=12;
5X-1=4;
5X=5;
X=1;
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