Răspuns :
a-b=37
a:b=2 rest 9
a=2b+9
(2b+9)-b=37
b+9=37
b=37-9
b=28
a=2*28+9
a=56+9
a=65
a:b=2 rest 9
a=2b+9
(2b+9)-b=37
b+9=37
b=37-9
b=28
a=2*28+9
a=56+9
a=65
a -b= 37
a: b= 2 rest 9=> a= 2b +9
2b +9- b= 37=> b= 28
a = 37+28
a = 65