a
I--------I
b
I---------------------I
a a
I--------II--------I
b=2a-6
I------------------I 3 I
a=primul numar
b= cel de al doilea numar
a-b=36
2*b=a+6
2b=a+6
b=2a-6
2a-6-a=36
a-6=36
a=36+6
a=42
b=2a-6
b=2*42-6
b=84-6
b=78
Verificare
a-b=36
78-42=36
Sper ca te am putut fii de ajutor!!!