a)слева C - 1 O - 4 H - 4
справа C - 1 O - 4 H - 4
б) CH4 + 2O2 = CO2 + 2H2O
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a)слева C - 1 O - 4 H - 4
справа C - 1 O - 4 H - 4
б) CH4 + 2O2 = CO2 + 2H2O