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Rozwiąż równania podane w postaci proporcji: Aby dokładnie! i rozpiac prosze a) x/2 = 5/6
b) x/2 = (x+1)/4
c) 2(x-1)/3 = (x+2)/5
d) (x-1) / (x+3) = x / (x+1)
e) (2a+1)/2a = b / (b-1)
f) (b-2) / (b+1) = b / (b-3)


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