Fabulous maths

hello I am going to talk to you about tidy numbers.Here is a example 56+7=63+10=73 yay we completed it                                                                                                                                                                                                                                                                                                                                            If you didn't under stand that here is an easier one  21+3=24+6=30 did you get that? Because that is a way more easier one. THANKS FOR READING!!!