x |
1×2 |
x |
2×3 |
x |
1995×1996 |
A.1995 | B.1996 | C.1997 | D.1998 |
1 |
1×2 |
1 |
2×3 |
1 |
1995×1996 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
1995 |
1 |
1996 |
1995 |
1996 |
1995 |
1996 |
x+3 |
2 |
x-1 |
6 |
5 |
6 |
6 |
5 |
1 |
6 |
A.先两边同乘以6 | B.先两边同乘以5 |
C.括号内先通分 | D.先去括号,再移项 |
1+x |
3 |
x-3 |
9 |
1 |
3 |
1 |
4 |
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