Ответ:

Объяснение:

CH3-CH=CH-CH3 + HBr -> CH3-CH2-CH(Br)-CH3

CH3-CH=C(CH3)-CH3 + HBr -> CH3-CH2-C(CH3)(Br)-CH3

CH3-CH=C(CH3)-CH3 + Br2 -> CH3-CH(Br)-C(CH3)(Br)-CH3

CH3-CH=C(CH3)-CH3 + H2 -> CH3-CH2-CH(CH3)-CH3