August 2018 1 19 Report
Rozwiąż układy równań metodą przeciwnych współczynników :

a) 3x + 2y = 13
2x + y = 11

b) 5x + 3y = 0
- x - 2y = 7

c) 3u + 2v = 2
5u + 4v = 6

d) 2x - 3y = 7
3x - 5y = 11

e) 5p - 2r = 21
3p + 5r = -6

f) 2x - 3y = 10
5x + 5y = 0
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