解(3x-15)/(5x+15)=1/2 方程
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解(3x-15)/(5x+15)=1/2 方程
解(3x-15)/(5x+15)=1/2 方程
解(3x-15)/(5x+15)=1/2 方程
2(3X-15)=5X+15
6X-30=5X+15
X=45
45
抓基础啊
2(3x-15)=5x+15
得到:6x-30=5x+15
得到:x=45
解方程(x-3/x)-(3-x/x+1)=5x-15/2x+2
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[(x+2)/(x+3)-(x+1)/(x+2)+(x+4)/(x+5)-(x+3)/(x+4)]/[(x的平方+7x+13)/(x的平方+8x+15)]
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