466. 8×(3m-2)-13=5×(12+3m)+28
24m-16-13=60+15m+28
24m-15m=60+28+13+16
9m=117 m=117:9 m=13
8 (3×13-2)-13=5×(12+3×13)+28
8×37-13=60+195+28.
283=283.
468. 273+263=536 237+536=773
127032-24072=1246260
102960:144=715
1246260:50=24925,2
715×144=102960
773-273=500
273×263=71799
(523×718 :359+907):9=217
523×718 =375514
375514:359=1046
1046+907=1953
1953:9=217
323×1998-48071:53+36956=681403
323×1998=645354
48071:53=907
645354-907=644447
644447+36956=681403