Ответ:
1) 3-х=4
3-х=-4.
х=-1 и х=-7
2)3-х+4=7х
3-х+4=-7х
8х=7
х=7/8
-6х=7
х=-7/6
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Ответ:
1) 3-х=4
3-х=-4.
х=-1 и х=-7
2)3-х+4=7х
3-х+4=-7х
8х=7
х=7/8
-6х=7
х=-7/6