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sleet_krkn [62]
3 years ago
15

1+4=5 2+5=12 3+6=21 8+11 =

Mathematics
2 answers:
aliya0001 [1]3 years ago
8 0
I'm gonna try my best. it looks like it's going.... 1+4=5, so 2+5=7, 7+5=12, 12 + 9, (which is 3+6)=21, so 8+11=19, 21+19=40
alekssr [168]3 years ago
4 0
The answer to 8+11 is 19 because 8+1 is 9 so 11+8 is 19
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