Chemistry Balancing Equations Help

These 2 problems please, and than you.

_Ca3(PO4)2 + _H2SO4 ---> _CaSO4 + _Ca(H2PO4)2

and

_H3PO4 + _HCL ---> _PCl5 + _H2O

Ca3(PO4)2 + 2 H2SO4 → 2 CaSO4 + Ca(H2PO4)2

H3PO4 + 5 HCl → PCl5 + 4 H2O