September 2018 2 21 Report

Rozwiąż równania:

a)

3x-1=29

b)

5x+4=78

c)-przykład jak powinno być zapisane:

np. 4(x+3)-(x+2)=x+5

4x+12-x-2=x+5

3x+10=x+5

3x-x=5-10

2x=-5/:2


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