Question

How can we prove 5+5+5=550

Answer 1

Given that 5+5+5=550 ,
             when we write one + as 4 by adding two top ends we get 
                                                                        5+545
                                                        then its answer is 550 

Answer 2

it was not going to happen mathematically    5+5+5=15 ( not 550 ) but it happen when  we replace " + " sighn by 4 in 1st place then equation is  545+ 5 = 550 .