3x-2等于7x-2,3x-4=x+3,
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x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?
*-----------------------------------------------*| 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 ||
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
(x+1)(x+2)(x+3)(x+4)等于多少
x^3+x^2+x=999,x等于多少
2x:3=x:7 x等于多少
3x=2x-4 x等于多少
4x+3=2-x 中x等于多少?
(x-1)(x-2)(x-3)(x-4)=0,求x等于多少,
2x+3x+4x+5x+x+6x+7x=100
3x-2等于7x-2,3x-4=x+3,
2x(5x+3)=3x(5x+3x)中x等于多少
2x-1/3-x+1/6=x+7/4-1求x等于多少?
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 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
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
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