Rozwiaz uklad rownan metoda przeciwnych wspolczunnikow A) {x+4y=11 {2x+5y=10 B) {4x+5y= -4 {6x+7y= -6 C) {-2x+5y= -10 {7x-4y=8
Prosze zeby bylo to zrobione tak jak na ponizszym przykladzie ;]
{2x-11y=73 /*3
{3x - 4y =47 /*(-2)
6x-33y=219
-6x-8y=-94
-25y=125
-25y=125 /25
y=-5
3x-4y=47
3x -4*(-5)=47
3x+20=47
3x=47-20
3x=27 /3
x=9
{x=9
{y= -5
DAJE NAJ Z GORY DZIEKI
A)
{x+4y=11 /*2
{2x+5y=10 / * (-1)
{2x+8y=22
{-2x-5y=-10
3y=12 /3
y=4
x+4y=11
x+16=11
x=11-16
x=-5
{x=-5
{y=4
B)
{4x+5y= -4 /*3
{6x+7y= -6 /*(-2)
{12x+15y=-12
{-12x-14y=12
y=0
4x+5y= -4
4x+0=-4
4x=-4/ 4
x=-1
{x=-1
{y=0
C)
{-2x+5y= -10 /* 7
{7x-4y=8 /* 2
{-14x+35y=-70
{14x-8y=16
27y=-54 /27
y=-2
7x-4y=8
7x-4* (-2)=8
7x+8=8
7x=0 /7
x=0
{x=0
{y=-2
{x+4y=11 /*-2
{2x+5y=10
{-2x-8y=-22
{2x+5y=10
-3y=10-22
-3y=-12
y=4
x+4y=11
x+4*4=11
x=11-16
x=-5
{x=-5
{y=4
b]
{4x+5y= -4 /*-6
{6x+7y= -6 /*4
{-24x-30y=24
{24x+28y=-24
28y-30y=24-24
-2y=0
y=0
4x+5y=-4
4x+5*0=-4
4x+0=-4
4x=-4
x=-1
{x=-1
{y=0
c]
{-2x+5y= -10 /*7
{7x-4y=8 *2
{-14x+35y=-70
{14x-8y=16
-8y+35y=16-70
27y=-54
y=-2
7x-4y=8
7x-4*[-2]=8
7x+8=8
7x=0
x=0
{x=0
{y=-2