Ответ:
х-1 5/10=8 3/20-4 1/4=163/20-17/4=163/20-85/20
х-15/10=78/20
х=78/20+15/10=78/20+30/20
х=108/20=5 8/20=5 2/5
(5 2/5-1 5/10)+4 1/4=8 3/20
(108/20-30/20)+85/20=8 3/20
163/20=8 3/20
8 3/20=8 3/20
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Ответ:
х-1 5/10=8 3/20-4 1/4=163/20-17/4=163/20-85/20
х-15/10=78/20
х=78/20+15/10=78/20+30/20
х=108/20=5 8/20=5 2/5
(5 2/5-1 5/10)+4 1/4=8 3/20
(108/20-30/20)+85/20=8 3/20
163/20=8 3/20
8 3/20=8 3/20