Odpowiedzi

2010-02-23T18:44:26+01:00
X+y=2490
13x-17y=0

y = 2490 - x
13x - 17(2490 - x) = 0

y = 2490 - x
13x - 42330 + 17x = 0

y = 2490 - x
30x = 42330 /:30

y = 2490 - x
x = 1411

y = 2490 - 1411
x = 1411

y = 1079
x = 1411
2010-02-23T19:02:05+01:00
X+y=2490
13x-17y=0

x=2490-y
13*(2490-y)-17y=0

x=2490-y
32370-13y-17y=0

x=2490-y
-30y=-32370 /:(-30)

x=2490-y
y=1079

x=2490-1079
y=1079

x=1411
y=1079