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Mazzapisi487
a fost răspuns

resolva in multimea R ecuatia
[tex] \frac{5x - 7}{2} - \frac{2x + 7}{3} = 3x - 14[/tex]
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Răspuns :

aducem la acelasi numitor

3(5x - 7) - 2(2x + 7) = 6(3x - 14)

15x - 21 - 4x - 14 = 18x - 84

84 - 21 - 14 = 18x - 15x + 4x

49 = 7x

x = 49 : 7

x = 7

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