Question

12-9=11. 18-6=39. 21-7=139. 16-5=?​

Answer 1

Answer:

2=5,4=18,6=39,8=68,10=105

AS

2=2×2+1=5

4=4×4+2=18

6=6×6+3=39

8=8×8+4=68

10=10×10+5=105

HOPE IT HELPS YOU