Răspunsuri

2014-09-17T09:51:23+03:00
A + B + C = 19
B = 1,2 * A
C = B + 2
C = 1,2A + 2, INLOCUIM IN PRIMA ECUATIE
A + 1,2A + 1,2A + 2 = 19
3,4A = 19 - 2
3,4A = 17
A = 5
B = 1,2 * 5 
B = 6
C = 6 + 2 
C = 8
VERIFICARE: 5 + 6 + 8 = 19
3 4 3
2014-09-17T09:55:33+03:00
A+b+c=19
b=1,2xa,c=b+2=1,2a+2
a+1,2a+1,2a+2=19
3,4a=17
a=5
b=1,2x5=6
c=b+2=6+2=8
1 3 1