(6x-2)/(2x-1)- (6x-3)/(3x-1)=1 是分式方程,

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 09:16:35
(6x-2)/(2x-1)-(6x-3)/(3x-1)=1是分式方程,(6x-2)/(2x-1)-(6x-3)/(3x-1)=1是分式方程,(6x-2)/(2x-1)-(6x-3)/(3x-1)=1是

(6x-2)/(2x-1)- (6x-3)/(3x-1)=1 是分式方程,
(6x-2)/(2x-1)- (6x-3)/(3x-1)=1 是分式方程,

(6x-2)/(2x-1)- (6x-3)/(3x-1)=1 是分式方程,
方程两边乘以(2x-1)(3x-1),得:
(6x-2)(3x-1)-(6x-3)(2x-1)=(2x-1)(3x-1)
2(3x-1)²-3(2x-1)²=(2x-1)(3x-1)
2(3x-1)²-(2x-1)(3x-1)-3(2x-1)²=0
[2(3x-1)-3(2x-1)]×[(3x-1)+(2x-1)]
5x-2=0
x=2/5

(6x-2)/(2x-1)- (6x-3)/(3x-1)=1
两边同乘以(2x-1)(3x-1)得:
2(3x-1)²-3(2x-1)²=(2x-1)(3x-1)
18x²-12x+2-12x²+12x-3=6x²-5x+1
5x=2
x=2/5

(6x-2)/(2x-1)- (6x-3)/(3x-1)=1
(6x-2)(3x-1)-(6x-3)(2x-1)=(2x-1)(3x-1)
18x^2-12x+2-12x^2+12x-3=6x^2-5x+1
5x=2
x=2/5

2(3x-1)/(2x-1)- 3(2x-1)/(3x-1)=1
设(3x-1)/(2x-1)=a
2a - 3/a=1
2a²-a-3=0
(a+1)(2a-3)=0
a=-1 或 a=3/2
(3x-1)/(2x-1)=-1
x=2/5
(3x-1)/(2x-1)=3/2
6x-2=6x-3(无解 舍)
所以 x=2/5

(6x-2)/(2x-1)- (6x-3)/(3x-1)=1 (分子都不为0,x≠1/2,x≠1/3,等下会用来检验结果)
[(6x-3)+1]/(2x-1)- [(6x-2)-1]/(3x-1)=1
3+1/(2x-1)- 2+1/(3x-1)=1
1/(2x-1)+1/(3x-1)=0
3x-1+2x-1=0 (上式等式两边同时乘以(2x-1)*(3...

全部展开

(6x-2)/(2x-1)- (6x-3)/(3x-1)=1 (分子都不为0,x≠1/2,x≠1/3,等下会用来检验结果)
[(6x-3)+1]/(2x-1)- [(6x-2)-1]/(3x-1)=1
3+1/(2x-1)- 2+1/(3x-1)=1
1/(2x-1)+1/(3x-1)=0
3x-1+2x-1=0 (上式等式两边同时乘以(2x-1)*(3x-1),要去掉分母,转化成整式来处理)
x=2/5
经检验,符合

收起

*-----------------------------------------------*| 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 || 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(x*x-6x-9)-x(x*x-8x-15)+2x(3-x) 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 难倒爱因斯坦的九宫格X 7 X | X 8 1 | X X X |X X X | X 4 X | 7 5 9 |X X 5 | 7 X 9 | X 1 4 |5 X X | X X 8 | 3 9 X |3 9 6 | 4 X 7 | X X 2 |X 8 7 | 9 X X | X X X |4 X X | 6 X 5 | X X X | X X 4 | X X 1 |2 X X | X X X | X X X | X 3 X | X X X |X 6 如下9*9宫图如何填x x x 1 x x x 2 9x x 5 x x x x x 4x 6 8 x x x x x xx x x 7 x x 5 x xx 2 x x 6 x x 8 xx x 3 x x 9 x x xx x x x 5 x 1 6 x 4 x x x 3 x x x x 7 x x x x 2 x x x 解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) (x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x) x+2/x^2-x-6 + 2x/x^3-3x - x+1/x^2-6x+9 (x+2/x^2-x-6)-(2x/x^2-3x)-(x+1/x^2-6x+9) x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 解决数独问题x 1 x 7 x x x 3 xx x x x 4 x 2 x x9 x 3 6 x 8 7 x 58 x x x x 9 x x xx x 2 x 5 x x x 4x 3 x x x x 6 x xx x x x x x x x 26 x x x x x x x 7x 5 4 1 7 x 9 8 x这道题我用了很多办法都没有头绪,请帮忙的朋友把解题的思 约分:1、x*x-9/6-2x 2、x*x-1/x-x*x 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,