October 2018 1 20 Report

Rozwiąż układ równań metodą przeciwnych współczynników.

a) {2x - y = 9
{ x - 4y = 1

b) { 5x + y = 7
{ x + 2y = 5

c) { x + y = 8
{ x - y = 6

d) { 2x - 5y = 6
{ 3x - 4y = 2

e) { 3y + 5x = 0
{ 3x + 2y = 4


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