0.2*（3X-5)+3=0.4*(X-2)+4

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0.2*（3X-5)+3=0.4*(X-2)+4
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0.2*（3X-5)+3=0.4*(X-2)+4
0.2*（3X-5)+3=0.4*(X-2)+4

0.2*（3X-5)+3=0.4*(X-2)+4
0.2*（3X-5)+3=0.4*(X-2)+4
0.6x-1+3=0.4x-0.8+4
0.6x-0.4x=4-0.8+1-3
0.2x=1.2
x=1.2÷0.2
x=6

x=6

0.2*3x-0.2*5+3=0.4x-0.4*2+4
0.6x-1+3=0.4x-0.8+4
0.6x+2=0.4x+3.2
0.6x-0.4x=3.2-2
0.2x=1.2
x=0.6

x=6

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!)+. 21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272 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:2- x+5/6=x- x-1/3,0.1-0.2x/0.03-1=0.7-x/0.4 *-----------------------------------------------*| 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-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2 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 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=?x等于 3x+5x-6x=? 3x+5x=8x.