Пошаговое объяснение:
325-a+617=219
a=325+617-219
a=723
468-259+c=382
c=382-468+259
C=173
1) 325 - (a - 617) = 219
a - 617 = 325 - 219
a - 617 = 106
a = 106 + 617
a = 723
2) 468 - (259 - c) = 382
259 - c = 468 - 382
259 - c = 86
c = 259 - 86
c = 173
