Ответ:
1) х-(х-4х+2)
х-(-3х+2)
х+3х-2
4х-2
2)2m-((n-m)+7n)
2m-(8n-m)
2m-8n+m
3m-8n
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Ответ:
1) х-(х-4х+2)
х-(-3х+2)
х+3х-2
4х-2
2)2m-((n-m)+7n)
2m-(8n-m)
2m-8n+m
3m-8n