9. Rezolvați prin metoda reducerii următoarele sisteme: (2x+3x+1)=8 15(x+y)-p=2 G e) (2(x+1)+3y=7 (3x+2(y-5)=-10* [2(-2x+y)+3y=-3 4(x-2y)+ 5y = 5 b) d) ***-14 (5x+3(y-1)=7 f) Kazeh 7(x+1)+2y=10 (3x-2(y+4)=8 4(x+1)+5y=10 (2(x-3y)+7y=-\ 3(3x-4y)+21) 4)​