January 2019 1 168 Report
Proporcje; Rozwiąż równania:
a) 2/x = 3/(x-1)
b) 4/(x+1)= 5/x
c) 3/5 = (2x- 1)/ (2-5x)
d) (2x+1)/ (1-2x)= 2/3
e) (0,4x-1)/ 3= (2x-5)/2

Jakby coś było niezrozumiałe to pytać.
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