3x+1/2-10x+1/6=xx-1/0.2=1+x/0.5
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7/xx+x+1/xx-1=2/xx-x
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-7
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-708)
3x+1/2-10x+1/6=xx-1/0.2=1+x/0.5
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
7/(XX+X)+1/(xx-x) =6/(xx-1)
解分式方程7/(XX+X)+1/(xx-x) =6/(xx-1)
7/(XX+X)+1/(xx-x) =6/(xx-1)
已知:3x=xx-x+1求(xxxx+xx+1)分之xx
1,2,3,4,5,6,7,8,9,九个数字XX除X=XX除X=XX除X
解方程:3x/(xx-1)+(xx-1)/3x=5/2
解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
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x(x+1)-(xx+y)=-3,求(xx+yy)/2-xy的值
题目是 (1) XX*X=XX X*X=XX X为未知数分别将1到9的9个数填入不能重复 *为乘号 (2)XX/X=X X/X=XX/ X X为
已知XX-11X+1=0,求下列各式:(1)X+1/X(2)XX+1/XX(3)XX/XXXX+1XX-11X+1=0的意思X乘X减11X加一等于0(1)X+1/X的意思是 X加1分之X(2)XX+1/XX X的平方加1分之X的平方(3)XX/XXXX+1 X的平方分之X的四次方加1