September 2018 0 17 Report

1.Rozwiąż układy rownań metodą podsumowania.

a) b) c) d)

{2x-2y=7 {0,4x+0,3y=1,4 {2x+3y+14 {1/2x-2y=8

{4x+3y=21 {0,1x+3y=2,3 {3x-2y=8 {2x+5y=6

Proszeee!!!!

Reklama

Odpowiedzi

c) 2x+3y=14 /*(-3)
3x-2y=8    /*2

-6x-9y=-42
6x-4y=16

 

-13y=-26

 

\left \{ {{y=2} \atop {x=4}} \right 


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