Ответ:
х+3/10=1/5×7
х+3/10=7/5=14/10
х=14/10-3/10
х=11/10=1 1/10
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Ответ:
х+3/10=1/5×7
х+3/10=7/5=14/10
х=14/10-3/10
х=11/10=1 1/10