6x-3x=4.8

x-o.8x=6 12x-8x=4.8 3x-8=16 7.5x-2x x-0.7x=3.6 求答案 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 2x+3x+4x+5x+x+6x+7x=100 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 X(x平方-6x-9)-x(x平方-8x-15)+2x(3-x)其中x=-六分之一 6x-3x=4.8 4.8-x=3{x-6} 3x-4*6=4.8+x 3x+5x-6x=? *-----------------------------------------------*| 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(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 [3/x]-[4/x-1]=6/x-x² 3.268=3X()+2X()+6X()+8X() [3/x]-[4/x-1]=6/x-x² x平方+5x+6=(x+3)(x+几)