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1 Rezolenti exercitiile
C) 3C 3 x+1)- 10 = 366-3). 17
a) x + 3(2x - 1) = 10 + 9​


Răspuns :

Răspuns:

a) x+3 (2x-1)=10+9

x+6x-3=19

7x=19+3

7x=21

=>x =21÷7

x=3