Question

suma a doua numere este 312, iar daca se imparte unul la celalalt se obtine catul 2 si restul 12. aflati numerele?

Answer 1

$a+b=312\\a:b=2 \ rest \ 12 \to \fbox{a=2b+12} \\********************\\\text{inlocuim in relatie} \\ \\2b+12+b=312\\3b+12=312\\3b=312-12\\3b=300 \\b=300:3\\\fbox{b=100}\\ \\ a+100=312\\a=312-100\\\fbox{a=212}$