X-20%X+60=X+3/5x要全

X-20%X+60=X+3/5x要全 X-20%X+60=X+5分之3x要全 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. 4x-3x(20-x)=5x 4x-3x(20-x)=5x-7x(20-x) 4x-3x(20-x)=5x-7x(20-x)的解法 4x-3(20-x)=60-5(9-x) (4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60) *-----------------------------------------------*| 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 || 小学六年级下册数学解方程.. 要详细的.. 还要过程 都写下来...2x+3x=60 3.6x-2.8x=12 100x-x=198 18x+2x+60 5x+6x=12.1 6.6x-5x=8 4x-x=24 1.5x-x=1 1.9x+0.4x=9.2 求y=3x^2+5x+6/x^2+2x+3值域的过程3x^2+5x+6全在分数线上面 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 先化简再求值要用完全平方公式做,[(x+5)(x-5)+(x+3)^2+(x-4)^2]÷先化简再求值要用完全平方公式做,[(x+5)(x-5)+(x+3)^2+(x-4)^2]÷5x,其中x=-1 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-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 40%X-24=75%X怎么解,要全 .化简..求值..5-x 16----- / ( x+3 - ----- )x-3 x-3__x=/2 - 5晕了..全乱了..我重新补个..(5-x)/(x-3)/[x+3-16/(x-3)]其中x=根号2减5 30%x+(x-30%x)80%+70=x X-30%X-80%（X-30%X）=70帮忙解一下,要全步骤,急!快点...