2x+9 |
x+3 |
1 |
x?3 |
(2x+9)(x?3)?(x+3) |
(x+3)(x?3) |
2(x?5)(x+3) |
(x+3)(x?3) |
2(x?5) |
x?3 |
根據(jù)題意得:
2(x?5) |
x?3 |
2 |
x |
方程的兩邊同乘x(x-3),得2x(x-5)=2x(x-3)+2(x-3),
解得x=1.
檢驗:把x=1代入x(x-3)≠0.
∴原方程的解為:x=1.
2x+9 |
x+3 |
1 |
x?3 |
2 |
x |
2x+9 |
x+3 |
1 |
x?3 |
(2x+9)(x?3)?(x+3) |
(x+3)(x?3) |
2(x?5)(x+3) |
(x+3)(x?3) |
2(x?5) |
x?3 |
2(x?5) |
x?3 |
2 |
x |