Question

2+7=34
8+9=18
6+3=78
5+7= ?

Answer 1

the answer is 35
plz mark it as brainliest:)

Answer 2

2+7 = (2*10)+(2*7) = 34
8+9 = (9*10) - (9*8) = 18
6+3 = (6*10) + (6*3) = 78
hence
5+7 = (7*10) - (7*5) = 35
if you have any  doubt comment me
and if you understand then mark as a brainlist.