Question

nr. pitigoilor din coliviile unui vanzator dat de valoarea lui n din egalitatea 24+n+39=n+n+n+n

Answer 1

n+24+39=n+n+n+n

n+63=4n

63=4n-n

63=3n

n=63:3

n=21

Answer 2

$24+n+39=n+n+n+n=\ \textgreater \ 24+39=n+n+n$$=\ \textgreater \ 63=3n=\ \textgreater \ 3n=63=\ \textgreater \ n=21$$Succes$