September 2018 1 11 Report

Zad. 6 Str. 42 ze zbioru zadań dla II gimnazjum

Rozwiąż układy równań.

a) { x= - y

{ x - y = 6

b) { y = x + 3

{ 2x + y = 9

c) { x - 4y = 15

{ y = 4x

d) { y = -2x - 1

{ x = y + 7

e) { - 3x = 2y

{ y = 1 - x

f) { 5x + 6y = 8

{ x = 4y - 1


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