a+b+c = 50
a : b = 14 rest 1
a = 14×b+1
a : c = 10 rest 3
a = 10×c + 3
14×b+1 = 10×c+3 => c = (14×b+1-3):10
inlocuim in prima ecuatie in functie de b
14×b+1 + b + (14×b-2):10 = 50
15×b + (14×b-2) : 10 = 49 |×10
150×b+14×b-2 = 490
164×b = 490+2
164×b = 492
b = 492:164
b = 3
a = 14×3+1 = 42+1 = 43
c = (43-3):10 = 40:10 = 4
Verificare:
43+3+4 = 50
a = 43
b = 3
c = 4