х+1+х+2+х+3+х+4+х+5+х=441
15+6х=441
6х=441-15
6х=426
Х=426:6
Х=71
Жауабы: 71;72;73;74;75;76
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х+1+х+2+х+3+х+4+х+5+х=441
15+6х=441
6х=441-15
6х=426
Х=426:6
Х=71
Жауабы: 71;72;73;74;75;76