October 2018 1 45 Report

Rozwiąż układy równań mwtodą podstawiania:

d){ 4a-2=b

{ 3a+7b=1,5

e) {5x=4-2y

{4x+y=3

f) {6x-3y=9

{ x+5y= -9,5

Bardzo proszę o pomoc :)


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