问题
解答题
| 解下列方程： （1）
（2）
（3）
|
答案
（1）77z+18=14z-45，
77z-14z=-45-18，
63z=-63，
z=-1；
（2）3（2x-1）-3（4x+3）=3x，
6x-3-12x-9=3x，
-9x=12，
x=-
；4 3
（3）3x-2+10=x+6，
2x=-2，
x=-1．
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| 解下列方程： （1）
（2）
（3）
|
（1）77z+18=14z-45，
77z-14z=-45-18，
63z=-63，
z=-1；
（2）3（2x-1）-3（4x+3）=3x，
6x-3-12x-9=3x，
-9x=12，
x=-
；4 3
（3）3x-2+10=x+6，
2x=-2，
x=-1．
| 阅读理解。 | ||||
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