January 2019 1 17 Report
Rozwiąż równanie i sprawdź.
a) 2x-8=10
b)2x+1 2/5 = 21
c)12-x=35-2
d)z= -6-2z
e) 10x-15=4x-12
f)3x+7-2x=8-x

ps.proszę o wytłumaczenie

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