x+2 |
4 |
2x-3 |
6 |
2x+3 |
3 |
2-3x |
2 |
0.4y+0.9 |
0.5 |
y-5 |
2 |
0.03+0.02y |
0.03 |
6 |
5 |
4y+9 |
5 |
y-5 |
2 |
3+2y |
3 |
|
x+a |
2 |
1 |
2 |
x-1 |
2 |
A.x=3 | B.x=-3 | C.x=
| D.x=-
|
A.x=
| B.x=-
| C.x=2 | D.x=-2 |
A.由
| ||
B.由5x=-4,得x=-
| ||
C.由2x-3=3x,得x=3 | ||
D.由2x+3=x-1,得2x-x=-1-3 |
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