Răspuns :
[31+2078135+(3436635-113-63090)+78]-3=
=[2078166+(3436522-63090)+78]-3=
=(2078166+3373432+78)-3=(5451598+78)-3=
=5451676-3=
=5451673
=[2078166+(3436522-63090)+78]-3=
=(2078166+3373432+78)-3=(5451598+78)-3=
=5451676-3=
=5451673