Răspuns :
12+6 = 18
12+3=15
12+4=16
12+24=36
12+36=48
24+12=36
24+6=30
24+8=32
24+48=72
24+72=96
36+13=49
36+9=45
36+12=48
36+72=108
36+108= 144
12+3=15
12+4=16
12+24=36
12+36=48
24+12=36
24+6=30
24+8=32
24+48=72
24+72=96
36+13=49
36+9=45
36+12=48
36+72=108
36+108= 144