February 2019 0 23 Report
Rozwiąż krok po kroku układ równań metodą PODSTAWIANIA:

a)
{x+2y=6
{2x+y=9

b)
{7x-y=8
{3x+y=12

c)
{2x+5y=14
{ x+3y=8

d)
{7x-y=20
{4x+2y=14



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