Question

Rezolvati prin metoda substitutiei

a){y=3x+1
{2x-y=0

b) {x+4y=0
2x-3y=1

c) {0,1x+0,2y=0,3
{1,2x-1,3y=0

VA ROOOOOOG AM NEVOIE DE AJUTOR URGENTTT DAU PUNCTE IN PLUS SI COROANA!!!

Answer 1

a){y=3x+1
{2x-3x+1=0

{y=3x+1
-x=-1
x=1
y=3+1=4

b){x=-4y
{2*(-4y)-3y=1

{x=-4y
{-8y-3y=1
{x=-4y
{-11y=1
y=-1/11
x=4/11

c){0,1x+0,2y=0,3
{y=1,2x/1,3

{0,1x+0,2(1,2x/1,3)=0
{y=1,2x/1,3

{0,1x+0,24x/1,3=0
{y=1,2x/1,3

{0,13x+0,24x=0
{y=1,2x/1,3

{0,37x=0
{y=1,2x/1,3

{x=0
{y=0