放逐CWI
幼苗
共回答了22个问题采纳率:100% 举报
6.8+12÷x=10.8,12÷x=4,x=12÷4,x=3;
14-0.5(x+3)=7.8,0.5(x+3)=6.2,x+3=12.4,x=9.4
3.5x-3x-10=8,0.5x=18,x=36
7.9-5x=7.8÷2; 5x=4,x=0.8
10x-20=6x,4x=20,x=5;
10+6x=8x,2x=10,x=5;
2(x+54)=8x,2x+108=8x,6x=108,x=18;
25-2x=5+2x,4x=20,x=5
1年前
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