A.由3x=2,得x=
| B.由-2x=4,得x=2 | ||
C.由
| D.由x+2=1,得x=-1 |
2 |
3 |
x |
4 |
A.若3x+5=1,则3x=1-5 | ||
B.若x-2=4x+1,则x-4x=1+2 | ||
C.若-3x=2,则x=-
| ||
D.若-
|
A.a+5=5+b | B.-
| C.m-a=m-b | D.am=bn |
A.若x+a=y+a,则x=y | B.若-
| ||||
C.若3x-1=3y-1,则x=y | D.若x2=y2,则x=y |
A.a+3=b-3 | B.
| ||||
C.2a=-2b | D.
|
1 |
4 |
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