4.8х+3.7х=15.3-3.4
8.5х=11.9
х=11.9:8.5
х=1.4
2) 7.6+5.6=13.2:2=6.6 среднеарифметическое
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4.8х+3.7х=15.3-3.4
8.5х=11.9
х=11.9:8.5
х=1.4
2) 7.6+5.6=13.2:2=6.6 среднеарифметическое