x+y = 5
x-y = 1
x = 5-y
5-y-y = 1
-2y = 1-5
-2y = -4 /:(-2)
y = 2
x = 5-2
x = 3
Spr.
3+2 = 5
3-2 = 1
5 = 5
1 = 1 OK.
2x+y = 14 /·(-4)
5x+4y = 17
-8x-4y = -56
-3x = -39 /:(-3)
x = 13
2x+y = 14
2·13+y = 14
26+y = 14
y = 14-26
y = -12
2·13+(-12) = 14
5·13+4·(-12) = 17
26-12 = 14
65-48 = 17
14 = 14
17 = 17 OK.
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x+y = 5
x-y = 1
x = 5-y
x-y = 1
x = 5-y
5-y-y = 1
x = 5-y
-2y = 1-5
x = 5-y
-2y = -4 /:(-2)
x = 5-y
y = 2
x = 5-2
y = 2
x = 3
y = 2
Spr.
x+y = 5
x-y = 1
3+2 = 5
3-2 = 1
5 = 5
1 = 1 OK.
2x+y = 14 /·(-4)
5x+4y = 17
-8x-4y = -56
5x+4y = 17
-3x = -39 /:(-3)
x = 13
x = 13
2x+y = 14
x = 13
2·13+y = 14
x = 13
26+y = 14
x = 13
y = 14-26
x = 13
y = -12
Spr.
2x+y = 14
5x+4y = 17
2·13+(-12) = 14
5·13+4·(-12) = 17
26-12 = 14
65-48 = 17
14 = 14
17 = 17 OK.