а) CH3CH(CH3)CH(C2H5)CH2CH3б) (CH3)3CCH2CH3в) CH3CH(CH3)CH2CH(C3H7)CH2CH2CH3г) (CH3)3CCH2C(CH3)2CH2CH(CH3)CH(C2H5)CH2CH2CH3
а) CH3CH(CH3)CH(C2H5)CH2CH3
б) (CH3)3CCH2CH3
в) CH3CH(CH3)CH2CH(C3H7)CH2CH2CH3
г) (CH3)3CCH2C(CH3)2CH2CH(CH3)CH(C2H5)CH2CH2CH3