{x+2y=-2 {2x-y=1 - Szkola-edukacja.pl

Miley777

x+2y=-2 4x-2y=2 5x=0 x=0 0+2y=-2 y=-1 y=-1 x=0

palemA582

Sposób 1) {x+2y=-2 {2x-y=1 {x=-2-2y {2x-y=1 {x=-2-2y {2(-2-2y)-y=1 {x=-2-2y {-4-4y-y=1 {x=-2-2y {-5y=5 {x=-2-2y {y=-1 {x=-2+2 {y=-1 {x=o {y=1 Sposób 2) {x+2y=-2 {2x-y=1/*2 {x+2y=-2 {4x-2y=2 5x=0 x=0 x+2y=-2 0+2y=-2 y=-1 x=0

szylo

{x+2y=-2 {2x-y=1 {x=-2-2y {2x-y=1 {x=-2-2y {2*(-2-2y)-y=1 {x=-2-2y {-4-4y-y=1 {x=-2-2y {-4y-y=1+4 {x=-2-2y {-5y=5 /:(-5) {x=-2-2y {y=-1 {x=-2-2*(-1) {y=-1 {x=2+2 {y=1 {x=0 {y=1