Răspuns :
87=43+44 87=20+25+42 68=39+29 68=19+19+30 55=11+44 55=20+30+5 49=40+9 49=15+15+19
64+23=87 29+39=68 25+30=55 34+15=49 23+12+42=87 39+17+22=68 35+12+18=55 34+15+19=49