16. Rezolvați sistemele:
(5(x+1)+ 7 = 3(y – 5)+ y + 3
a)
|(x+y)(x - y) = (x+1)2 – (y-2)23
(2(x + y + 5) – 3(x - y -2)=13
b)
3(2x+y+4) + 2(3x +2y+5) =_93
