How can you get methylamine from ethylamine?

Explanation

Preparation of methylamine from ethylamine
`underset("Ethyl amine")(CH_(3)CH_(2)NH_(2)) underset(-N_(2), -H_(2)O)overset(HONO)rarr underset("Ethanol")(CH_(3)CH_(2)OH) underset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))overset([O])rarr underset("Ethanal")(CH_(3)CHO) underset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))overset([O])rarr underset("Ethanoic acid")(CH_(3)COOH) underset("Heat")overset(NH_(3))rarr underset("Ethanamide")(CH_(3)CONH_(2)) overset(Br_(2)//KOH)rarr underset("Methanamide")(CH_(3)NH_(2))`