7+3х=-4х-14
3х+4х=-14-7
7х=-21
х=-3.
х=-3
Ответ: -3
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7+3х=-4х-14
3х+4х=-14-7
7х=-21
х=-3.
7+3х=-4х-14
7х=-21
х=-3
Ответ: -3