August 2018 1 44 Report
Rozwiąż układy równań metodą przeciwnych współczynników :

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

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

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

d) 3x + y = 5
2x - y = 0

e) 2x - y = 5
x + y = 4

f) - x - y = -6
- x + y = 2

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