Răspuns:
a)
[tex] \frac{x - 1}{1 + \frac{1}{2} } = \frac{ \frac{7}{3} - 1}{3 - \frac{3}{2} } = > \frac{x - 1}{ \frac{3}{2} } = \frac{ \frac{4}{3} }{ \frac{3}{2} } = > \frac{(x - 1) \times 2}{3} = \frac{8}{9} = > \frac{2x - 2}{3} = \frac{8}{9} = > 9(2x - 2) = 24 = > 18x - 18 = 24 = > 18x = 24 + 18 = > 18x = 42 = > x = \frac{42}{18} = \frac{7}{3} [/tex]
b)
[tex] \frac{2x + 1}{4x + 3} = \frac{1}{3} = > 3(2x + 1) = 4x + 3 = > 6x + 3 = 4x + 3 = > 6x = 4x = > 6x - 4x = 0 = > 2x = 0 = > x = 0[/tex]
Sper ca te-am ajutat :)
