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rezolvati in multimea R ecuatia;
5x+4=25-2x


Răspuns :

5x + 4 = 25 - 2x
5x + 2x = 25 - 4
7x = 21
x = 21 : 7
x = 3
Hai ma ca e simpla! D-astea nu stii tu :}
5x+2x=25-4
7x=21
x=3