Question

suma a duoa numere este 44,iar diferenta lor 12.care sunt numerele?

Answer 1

$\left \{ {{a+b=44} \atop {a-b=12}} \right.$⇒$\left \{ {{a=44-b} \atop {44-b-b=12}} \right.$⇒$\left \{ {{a=44-b } \atop {44-2b=12}} \right.$⇒$\left \{ {{a=44-b} \atop {b=16}} \right.$⇒$\left \{ {{a=28} \atop {b=16}} \right.$