October 2018 1 20 Report

Rozwiąż układ równań metodą podstawienia.

a.) 3x+4y=56

2x - y = 19

b) 7x +2y=42

4x - y =39

c.) 6x +y-29=0

-3x+7y-23=0

d.) 2x-y-11=0

3x+2y-62=0


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