Răspuns:
[tex]a = \frac{3}{4} \times b = > a + b = 24 \\ = > \frac{3}{4 } \times b + b = 24 \\ = > \frac{3b}{4} + b = 24 \\ = > \frac{3b + 4b}{4} = 24 \\ = > \frac{7b}{4} = 24 = > 7b = 24 \div 4 \\ = > 7b = 6 \\ = > b = \frac{7}{6} \\ \\ = > a = \frac{3}{4} + \frac{7}{6} = \frac{9 + 14}{12} \\ = > \frac{22}{12} = \frac{11}{2} [/tex]
