Расставьте  коэффициенты. 
a) 
KClO3=KCl+O2 
NaNO3=NaNO2+O2 
CuOH=Cu2O+H2O 
Al(OH)3=Al2O3+H2O 
б) 
KClO=KClO3+KCl 
NH4NO3=N2O+H2O 
NH4NO2=N2+H2O 
(CuOH)2co3=CuO+H2O+CO2  
помогите пожалуйста 
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