Question

Rezolvati urmatoarele sisteme de ecuatii:
a) {2(x+2y)-3(x-3y)=7
{3(2x+y)-2(3x-2y)=-14

b){5(3y-x)-3{2x+5y)=-22
{4(5x+3y)+2(x+6y)=44

c){4(x+3y)-2(2x-4y)=5(5-x)
{7(-x+2y)+3(y+2)=5(5-x)

d){-2(-x+4y)+3(2x-5y)=3(x-11)
{5(-y-x)+4(x-1)=3(x+1)-4

urgent daca se poate va rog

Answer 1

Răspuns:

a) x=-33, y=-2

b) x=2, y=0

c) x=18/5 , y=7/5

d) x=-2, y=1