1)5984-128х=480; -128х=480-5984; -128х=-5504; х=5504:128; х=43; 2)а:8=485-325; а:8=160; а=160*8; а=1280; 3)13b=133-5; 13b=128; b=128:13; b=9,8; 4)17a=721+21; 17a=742; a=742:17; a=43,6; 5)5y-123=248-24; 5y-123=224; 5y=224+123; 5y=347; y=347:5; y=69,4; 6)658-18x=34*17; 658-18x=578; -18x=578-658; -18x=-80; x=80:18; x=4,4