AB = AC + BC;
AC = BC + 3;
AC + BC = 25;
BC + 3 + BC = 25;
2BC = 22;
BC = 11;
AC = BC + 3 = 11 + 3 = 14;
AB = AC + BC;
AC = BC + 3;
AC + BC = 25;
BC + 3 + BC = 25;
2BC = 22;
BC = 11;
AC = BC + 3 = 11 + 3 = 14;