September 2018 1 21 Report

sprawdz,czy podana liczba spełnia równanie:

a)5(n+1)-10=3n+1..3

b)2(a+1)-3(a-5)=7a...2

c)3x(x-5)=(x-2)(3x-3)..-1

d)3/5-(7/9-1/4)=2-(x+3)...0

4


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