19+19•0=19 11-22:2=0 (74+26):10•9=90
18+18•1=36 22-33:2=11 (75+25):10•8=80
17+17•2=51 33-44:4=22 (76+24):10•7=70
18+18•3=72 44-55:5=33 (77+23):10•6=60
Готово. Готово. Готово.
1 5 10 10 5 1
1 6 15 30 15 6 1
1 7 21 45 45 21 7 1
1 8 28 66 90 66 28 8 1
1 9 36 94 156 156 94 36 9 1
1 10 45 130 250 312 250 130 45 10 1
............................