👤

14. Rezolvați sistemele:
a)
{ 4x+3(y-2) = -1
{7x-5(y + 2) = 9
b){3(x+2)-2(y-1)=11
{5x - 4(y-2) =15
c){7(x-1)-2y=16
{4(2x-3)+11y=1
d){5(x-1)=3(3-2y)-42
{3(3x-2)=11+5(y-4)​