Răspuns :
a+b=195
a+75=b+40
a=b+40-75
a=b-35
b-35+b=195
2b=195-35
2b=160
b=80
a+80=195
a=195-80
a=115
a+75=b+40
a=b+40-75
a=b-35
b-35+b=195
2b=195-35
2b=160
b=80
a+80=195
a=195-80
a=115