Question

Suma a doua numere este 150, iar diferenta celor doua numere este 38. Determina cele doua numere
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Answer 1

x+y=150
x-y=38
Adunam relatiile 
x+x+y-y=150+38
2x=188
x=94
94+y=150
y=150-94
y=56

x=94
y=56

Answer 2

[tex]I: \left \{ {{a+b=150} \atop {a-b=38}} \right. \\ ~~~~~~----\\ ~~~~~~~2a=188=\ \textgreater \ a=94\\ ~~~~~~~94-b=38=\ \textgreater \ b=56\\\\ II: \left \{ {{a+b=150} \atop {a-b=38}} \right. \\ ~~~~~~~----\\ ~~~~~~~38+2b=150=\ \textgreater \ 2b=112=\ \textgreater \ b=56\\ ~~~~~~~a+56=150=\ \textgreater \ a=150-56=\ \textgreater \ a=94\\\\ Cele~doua~numere~sunt~94~si~56.[/tex]