6-3(x+2/3)+2/3 -x=-2/5x+1 2x-1/3=-x/3+2
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6-3(x+2/3)+2/3-x=-2/5x+12x-1/3=-x/3+26-3(x+2/3)+2/3-x=-2/5x+12x-1/3=-x/3+26-3(x+2/3)+2/3-x=-2/5x+12x
6-3(x+2/3)+2/3 -x=-2/5x+1 2x-1/3=-x/3+2
6-3(x+2/3)+2/3 -x=-2/5x+1 2x-1/3=-x/3+2
6-3(x+2/3)+2/3 -x=-2/5x+1 2x-1/3=-x/3+2
1,6-3(x+2/3)+2/3 -x=-2/5x+1
所以6-3x-2+2/3-x=-2/5x+1
移项,合并同类项:11/3=18/5x
得:x=55/54
2,2x-1/3=-x/3+2
移项,合并同类项:7/3x=7/3
得:x=1
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x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
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x/x-3-5x/x^2-x-6计算
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