September 2018 2 17 Report

Dokończ układy równań i dodaj sprawdezenia:

1. x+y=12,5

1,2+0,8y=13

2. x+y=450

0,6x+1,5y=450

3. y=0,2*x

1,1y=0,2*(x+2oo)

4. 0,2x+0,2y=4

x+y=20

5. x+y=200

1,2x+0,2y=200*0,3


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