December 2018 1 39 Report
Rozwiąż układy równań metodą podstawiania.:
a) { x + 3y = 3
x - y = 5

b) { 4a - 2 = b
3a + 7b = 1,5

c) { 6x - 3y = 9
x + 5y = - 9,5

DAM NAJ ! :o
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