вынесите общий множитель за скобки
1) 11a+11b;
2) 4c+12d;
3) 6n+15m;
4) 12n+18m;
5) 5p+10k+15t;
6) 8p+10k+6t;
11(a+b) 4(c+3d) 3(2n+5m) 6(2n+3m) 5(p+2k+3t) 2(4p+5k+3t)
11(а+b) 4(a+3b) 3(2n+5m) 5(p+2k+3t) 2(4p+5k+3t)