" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x - y = 3
x+2y=6
x=3+y
3+y+2y=6
x=3+y
3y=3 //3
x=3+y
y=1
x=3+1
x=4
y=1
b ) x + 3 y = 0
2x - y = 3
x=-3y
2*(-3y)-y=3
x=-3y
-6y-y=3
x=-3y
-7y=3 //(-7)
x=-3y
y=-3/7
x=-3*(-3/7)
x=9/7
y=-3/7
c ) 7x - y + 17 = 0
5x + 6y = 8
y=7x+17
5x+6*(7x+17)=8
y=7x+17
5x+42x+102=8
y=7x+17
47x=-94 //47
y=7x+17
x=-2
y=7*(-2)+17
x=-2
y=-14+17
x=-2
y=3
* mnożenie
// obustronne dzielenie
Proszę :P
x - y = 3/*2
x+2y=6
2x-2y=6
x=4
y=1
b ) x + 3 y = 0
2x - y = 3/*3
x+3y=0
6x-3y=9
x=9/7
y=-3/7
c ) 7x - y + 17 = 0
5x + 6y = 8
7x-y=-17/*6
5x+6y=8
42x-6y=-102
5x+6y=8
x=-2
y=3
x - y = 3/*2
x+2y=6
2x-2y=6
x=4
y=1
*****************************************
b ) x + 3 y = 0
2x - y = 3/*3
x+3y=0
6x-3y=9
x=9/7
y=-3/7
*******************************************
c ) 7x - y + 17 = 0
5x + 6y = 8
7x-y=-17/*6
5x+6y=8
42x-6y=-102
5x+6y=8
x=-2
y=3
**************************************
Pozdrawiam ;]