作业帮(400-x)/6+x/8=65 (400-x)/6+x/8=65
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(400-x)/6+x/8=65 (400-x)/6+x/8=65
(400-x)/6+x/8=65
(400-x)/6+x/8=65
(400-x)/6+x/8=65 (400-x)/6+x/8=65
(400-x)/6+x/8=65
4(400-x)+3x=65*24
1600-4x+3x=1560
-x=1560-1600
-x=-40
x=40
两边同乘以24，得4（400-x）+3x=1560，x=40
x=40
6X+8(65-X)=400
(400-x)/6+x/8=65 (400-x)/6+x/8=65
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
6x+7x+8x+9x.+100x=400
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
(x+7/x+6) +(x+9/x+8)=9x=(x+10/x+9) +(x+6/x+5)
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
X(x平方-6x-9)-x(x平方-8x-15)+2x(3-x)其中x=-六分之一
(x+8)(x+6)(x+7)+(x+5)(x+6)(x+7)=(x+5)(x+8)(x+7)+(x+5)(x+8)(x+6)
*-----------------------------------------------*| 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
6x+4x+8x=32 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
3.268=3X()+2X()+6X()+8X()
X+8/X=40