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14. Rezolvați sistemele:
c)
; b)
3(x-2y-2)-2(2x+y-4)+9=-15 [2(-2x-y+3)-3(-x+3y-4)+5=-8
4(2x-y+2)-3(x-2y-5)-7=32 4(x+2y+3)-3(2x+y+5)+7=23
3(x-3y+2)+2(-x+2y-5)=-11
4(3x-2y-3)-5(2x-3y-4)=28' 3(2x+y-5)+2(-x-y+3)=2
d)
(2(4x-3y+7)-3(2x-y+4)=-3
.