a+b+c = 1 032
b = 3×a
c = a:2+60
inlocuim in prima ecuatie in functie de a
a + 3×a +a:2 +60 = 1 032
4×a + a : 2 = 1 032 -60
4×a + a : 2 = 972 |×2
8×a + a = 1 944
9×a = 1944
a = 1944 : 9
a = 216
b = 3×216 = 648
c = 216 :2 + 60 = 108+60 = 168
Verificare:
216+648+168 =1 032
a = 216
b = 648
c = 168