Răspuns :
c = 215 - 132
c = 83
b - 83 = 132
b = 132 + 83
b = 215
a - 215 =215
a =215 + 215
a = 430
a - c = ?
430 - 83 = 347
c = 83
b - 83 = 132
b = 132 + 83
b = 215
a - 215 =215
a =215 + 215
a = 430
a - c = ?
430 - 83 = 347