(3x-2*5)-(3*5-2x)=5

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(3x-2*5)-(3*5-2x)=5(3x-2*5)-(3*5-2x)=5(3x-2*5)-(3*5-2x)=5(3x-2*5)-(3*5-2x)=53X-10-15+2X=55X-25=55X=5

(3x-2*5)-(3*5-2x)=5
(3x-2*5)-(3*5-2x)=5

(3x-2*5)-(3*5-2x)=5
(3x-2*5)-(3*5-2x)=5
3X-10-15+2X=5
5X-25=5
5X=5+25
5X=30
X=6

(3x-2*5)-(3*5-2x)=5
3x-10-15+2x=5
5x=30
x=6

(3x-2*5)-(3*5-2x)=5
3x-2*5-3*5+2x=5
5X=2*5+3*5+5
X=2+3+1
X=6

(3x-2*5)-(3*5-2x)=5
3X-10-15+2X=5
5X-25=5
5X=5+25
5X=30
X=6

3x-10-3502x=5
x-10-35=5
x=50

*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X 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? (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? x^5-2x^3+x=? 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 (x+3x+5x...+2009x)-(2x+4x+6x+...+2010x) 5x/(x-2)-2=3(x-2)/x 8x+3(x-2)=5x+(x-3) x/x-3-5x/x^2-x-6计算 x^5-x^4+x^3-x^2+x-1