Having real trouble trying to write a balanced equationfor Hydrogen Cyanide. Every time I get most of it right I unbalance everything else orelse land up with huge numbers. Any hints gratefully received

would you care to give the equation?

CH4 + NH3 +O2 -- HCN + H2O

is it 2ch4+2nh3+3o2=>2hcn+6h2o