September 2018 1 27 Report

1 rozwiąż układy równań metodą przeciwnych wspólczynników

a) (2x+5y=7

(3x-5y=3

b)

( x+y=2

(x-y=0

C)

(x+2y=9

(-x -3y = 5

d)

( -x +y =5

( x+y=5

e)

(2x-1,1y= o,7

( 0,5x +1,1y= 4,3

f )

(x-2y = 4

( - x +3y = 0


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