Răspuns :
(X+199999)-9876=200222
X+199999=200222+9876
X+199999=210098
X=210098-199999
X=10099
X+199999=200222+9876
X+199999=210098
X=210098-199999
X=10099
x+199999-9876=200222
prin metoda drumului invers
x+199999-9876=200222
x+199999=200222+9876
x+199999=210098
x=210098-199999
x=10099
S={10099}
Sper ca team ajutat
prin metoda drumului invers
x+199999-9876=200222
x+199999=200222+9876
x+199999=210098
x=210098-199999
x=10099
S={10099}
Sper ca team ajutat