A.2A+B═C+2D B.A+2B═2C+D C.A+2B═C+2D D.2A+B═2C+D
A.A+B=C+D B.A+2B=2C+D C.2A+B=2C+D D.2A+B=C+2D
A.A+B→C+D B.A+2B→2C+D C.2A+B→2C+D 2A+B→C+2D