Odpowiedzi

2010-04-11T16:22:01+02:00
2010-04-11T16:25:42+02:00
D = ab/a+c
ab = d(a+c)
ab = ad+cd
ab-ad = cd
a(b-d) = cd
a = cd/b-d
2010-04-11T16:26:01+02:00
D = ab/a+c
ab = d(a+c)
ab = ad+cd
ab-ad = cd
a(b-d) = cd
a = cd/b-d
Myślę,że pomogłam.