October 2018 1 21 Report

PLISS O POMOC !!!!

rozwiąż układy równań metodą podstawiania:

a)

3x+y=-1

4x+3y=2

b)

x+4y=1

x-8y=-1

c)

3x+y=11

2x-y-2

d)

10c-d=3

3c+d=10

e)

5e-2f=8

-5e+f=-9


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