Ответ:
Х/7=х/3+8/1
3х/21=7х/21+168/21
-4х/21=168/21
-4х=168
Х=-42
/- дробь
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Ответ:
Х/7=х/3+8/1
3х/21=7х/21+168/21
-4х/21=168/21
-4х=168
Х=-42
/- дробь