Răspuns :
Răspuns:
5/(x+7)=4/(x+3)
4(x+7)=5(x+3)
4x+28=5x+15
28-15=5x-4x
x=13
raspuns d
Salut!
Răspuns: d ✅
[tex] \bf \frac{5}{x + 7} = \frac{4}{x + 3} = > 5(x + 3) = 4(x +7)[/tex]
5x + 15 = 4x + 28
5x - 4x = 28 - 15
x = 13 => d
Răspuns:
5/(x+7)=4/(x+3)
4(x+7)=5(x+3)
4x+28=5x+15
28-15=5x-4x
x=13
raspuns d
[tex] \bf \frac{5}{x + 7} = \frac{4}{x + 3} = > 5(x + 3) = 4(x +7)[/tex]
5x + 15 = 4x + 28
5x - 4x = 28 - 15
x = 13 => d