Odpowiedzi

2010-03-04T18:19:46+01:00
4x-3y=1
2x+y=2|*(-2)

4x-3y=1
-4x-2y=-4

-5y=-3
y=⅗
teraz liczymy x
2x+⅗=2
2x=1⅖
x=7/10
2010-03-04T18:21:21+01:00
4x - 3y = 1
2x + y = 2 /*(-2)

4x - 3y = 1
-4x - 2y = -4

-5y = -3
4x - 3y = 1

y = 0.6
4x - 3 x 0.6 = 1

4x - 1.8 = 1
y = 0.6

4x = 2.8
y = 0.6

x = 0.7
y = 0.6