2.4x-1.4x-3x=5.2-8
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2.4x-1.4x-3x=5.2-82.4x-1.4x-3x=5.2-82.4x-1.4x-3x=5.2-8（2.4-1.4-3）x=-2.8-2x=-2.8x=1.41.3—2x=—2.8…
2.4x-1.4x-3x=5.2-8
2.4x-1.4x-3x=5.2-8
2.4x-1.4x-3x=5.2-8
（2.4-1.4-3）x=-2.8
-2x=-2.8
x=1.4
1.3
—2x=—2.8
…
2.4x-1.4x-3x=5.2-8
2.4x-1.4x=5.2-8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
*-----------------------------------------------*| 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)
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
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
3x+5x=8x.
4,8-x=3x(x
8x(x-5)=3x
(x+1)/(x+2)+(x+8)/(x+9)解答x+1/x+2+x+8/x+9=x+2/x+3+x+7/x+8
2.4x-1.4x+3x+2.4=0
2.4x+1.4x+2.4=3x
4x-1.4x-3x+2.4=02.4x-1.4x-3x+2.4=0
8x+3(x-2)=5x+(x-3)
X+0.5X=3 X-0.8X=8
3.268=3X()+2X()+6X()+8X()