Răspunsuri

2014-02-09T15:48:24+02:00
X + y = 4.6
1/3*x = 2 + 1/7*y => 7x - 3y = 42
3x + 3y = 13.8
10x = 55.8
x = 5.58
y = 4.6 - 5.58 = -0.98