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数学
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x-[3/10x+(3/10x+3)=20%x
请帮忙解一下,急~~~~要写出过程哦!
人气:227 ℃ 时间:2020-04-23 18:45:10
解答
x-[3/10x+(3/10x+3)=20%x
x-[3/5x+3]=1/5x
2/5x-3=1/5x
1/5x=3
x=15
推荐
x-(3/10x+20)=260
x^3+2x^2-10x-20
3/5x=20*1/4 25%+10x=4/5 x-15%x=68
X+3/10X=20怎么算?
10X+20(18-X)=280
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