220*x+460=6300
220*х=6300-460
220*х=5840
х=5840:220
х=26 6/11
220*26 6/11+460=6300
6300=6300
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220*x+460=6300
220*х=6300-460
220*х=5840
х=5840:220
х=26 6/11
220*26 6/11+460=6300
6300=6300