Prove it

(49^2)+49=50×49

LHS = 49^2 + 49 = 49*49 + 49*1 = 49*(49+1) = 49*50 = 50*49 = RHS

If, 1 = 49 2 = 51 3 = 52 then 4 = ??

On behalf of Jaspalsingh Parmar

If, 29 - 1 = 30 9 - 1 = 10 14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true? 11 - 1 = 10 ?