Could you tell me how to balance equations like these?
The numbers with * before them mean that they're subscripts. You can not change the subscripts, but you may put numbers in the blank spaces. The arrow is like an equals sign.
examples-
___C*5H*9O+ ___O*2 --->___CO*2+ ___H*2O
___NH*3+ ___H*2SO*4 --->___(NH*4)*2SO*4