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-------- - ------------ = 4 /*10
5 """"""""" 2
x-3 """""2 -y
------- - --------- = - 2 /*6
3 """""" 6
"""""x + 5 """""""""y - 2
10*-------- - 10*------------ = 10* 4
"""""5 """"""""""""""" 2
"""x-3 """"""""""2 -y
6*------- - 6*--------- = 6 * (- 2 )
"""""3 """"""""" 6
2(x+5) - 5(y-2) = 40
2(x-3) - (2-y) = -12
2x + 10 - 5y + 10 = 40
2x - 6 - 2 + y = -12
2x - 5y +20 = 40
2x + y - 8 = - 12
2x- 5y = 40 - 20
2x + y = - 12 + 8
2x - 5y = 20
2x + y = - 4 /*5
2x - 5y = 20
10x +5y = - 20
--------------------------------- dodaję stronami
2x - 5y + 10x + 5y = 20 -20
12x= 0
x= 0
podstawiam obliczoną wartość do jednego z równań
2x - 5y = 20
2*0 - 5y = 20
0 - 5y = 20
- 5y = 20
y = 20 : (-5)
y = - 4
spr.
x + 5 """"""y - 2
-------- - ------------ = 4
5 """"""""" 2
L =
x + 5 """"""y - 2 """""""0+5 """""""" - 4 - 2
-------- - ------------ = ------------ - ------------------ =5/5 - (-6/2) = 1 -(-3) = 1 + 3= 4
5 """"""""" """2"""""""""""5 """"""""""""2
P = 4
4 = 4
L=P
Odp. Rozwiązaniem tego układu równań są liczby x= 0 oraz y = - 4.