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Rezolvati in R ecuatia:
a)5(3x-6)+4(3-2x)=5x-8
b)9(x-3)-4(7-3x)=5-3x


Răspuns :

a) 15x-30+12-8x=5x-8
  =15x-8x-30+12=5x-8
  =7x-18=5x-8
  =7x-5x=-8+18
  =2x=10 => x=5