September 2018 1 21 Report

Rozwiąż układy równan metodą podstawiania:

a) 2x+3y=1
3x -2y=-5

b) 5x+3y=0
1,5x + y = 2

c) ½x + 2y =4

-x+3y=-1

d) y=3x - 1
2x=y+1


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