甲数是x,乙数是6x,甲乙两数差是100,求乙数

甲数是x,乙数是6x,甲乙两数差是100,求乙数 2x+3x+4x+5x+x+6x+7x=100 （X+X)+(X-X)+(X*X)+(X/X)=100 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 1x+2x+3x+4x+5x+6x+7x…+99x=100 *-----------------------------------------------*| 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 || 先化简再求值(x+3x+5x+7x+.+101x)-(2x+4x+6x+...100x),其中x=51分之2 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 乙数是X,甲数是X+X,它们的和是100,甲乙数各是多少? 1.x^4-2x^3-8x+162.144(x2-1)x^2-100x^23.(x^2+6x+6)^2+x^2+6x+4 当x=2,求1/x＊(x+2)+1/(x+2)*(x++4)+1/(x+4)*(x+6)+.+1/(x+98)*(x+100)的值 当x=2,求1/x(x+2)+1/(x+2)*(x++4)+1/(x+4)*(x+6)+.+1/(x+98)*(x+100)的值 x+2x+3x+.+100x 6x+7x+8x+9x.+100x=400 x/6+x/9=100 x是多少 x+2(x+8)+6(x+8)=100 求解 1/X(X+3)+1/(X+5)(X+6)+……＋1/(X+99)(X+100)