2(100-x)-4x=80
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2(100-x)-4x=802(100-x)-4x=802(100-x)-4x=80
2(100-x)-4x=80
2(100-x)-4x=80
2(100-x)-4x=80
解方程X+(X*4+80)/2=100
2(100-x)-4x=80
-(X²+3X)+2(4X+X²)其中X=-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
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
2X/(X/80+X/100)=
4(2-x)²=x(x-2)
(3x+2)(x+3)=x+4
300字读后感 2篇 俄把格式说一下吧:《xxxx》(写题目)主要内容:x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容)思考分析:x x x
3x/(x-2)-x/(x+2)÷2x/(x-4)化简3x/(x-2)-x/(x+2)÷2x/(x²-4)化简
解方程:x(2X-3)+2x(x-1)=4x(x-2)+9
80(X+2)=100X
(x-1)(x-2)+(x-2)(x+3)-2(x-3)(x-4)>=(大于等于)-4
(2/1-x)-(x/3-x)+(2x-1/x²-4x+3)=1
计算.(80-2x)(100-2x)=
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2(200-x)-4x=100 怎么解