у-165=620+173
у=620+173+165
у=958
800-х=870-610
-х=870-610-800
х=540
55*х=820-710
55х=110
х=110/55
х=2
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у-165=620+173
у=620+173+165
у=958
800-х=870-610
-х=870-610-800
х=540
55*х=820-710
55х=110
х=110/55
х=2