Balancing Equations 25/1

As life is getting harder and harder, sometimes it's ok to let our left brain rest for a while... and start to develop our mysterious right brain, which is    daydreaming : )
To keep our brain in BALANCE

In BALANCE EQUATION, basically it shows the atom number is equal in each side ( right and left)
Without taking a balance, it's just a SKELETON EQUATION

Ex.
H    +   O2        =          H2O     (2O left and 1O right, which is not balance)
H    +   O2        =         2H2O      (2O left and 2O right, O's done, BUT consequently it also adds up the H)
4H  +   O2        =         2H2O   (O2 = O2,  4H = 4H ) DONE~
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It has shown that both atoms in each side is equal.

MOREOVER,

Once we see   NO3, NO4, SO3, SO2, CO2 .....   < we can count on 1 per one compound in each side

One more method