Balancing chemical equations is when you make the components on both sides of the equation equal each other.
N2+H2=NH3
KClO3=KCl+O2
NaCl+F2=NaF+Cl2
H2+O2=H2O
AgNO3+MgCl2=AgCl+Mg(NO3)2
KClO3=KCl+O2
NaCl+F2=NaF+Cl2
H2+O2=H2O
AgNO3+MgCl2=AgCl+Mg(NO3)2