October 2018 1 29 Report

Rozwiąż układy równań:

c)

x-y=5

\frac{1}{2}x-1=\frac{1}{4}y

d)

5x-1=3y

1,6y-2=4-2x

e)

-x-y=2

2(3x+y)=-20

f)

4x+3y=54

\frac{1}{3}x=4(1+\frac{1}{8}y)


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