Răspuns:
1. a)
[tex] \frac{2}{3} x = 60 \\ 2x = 180 \\ x = 180 \div 2 \: \\ x = 90[/tex]
b)
[tex] \frac{1}{5} x = 2\frac{1}{12} \\ \frac{x}{5} = \frac{2 \times 12 + 1}{12} \\ \frac{x}{5} = \frac{25}{12} \\ x = \frac{5 \times 25}{12} \\ x = \frac{125}{12} [/tex]
2.
[tex]x + \frac{1}{9} = 2x - \frac{1}{12} \\ \frac{36x}{36} + \frac{4}{36} = \frac{72x}{36} - \frac{3}{36} \\ 36x + 4 = 72x - 3 \\ 4 + 3 = 72x - 36x \\ 7 = 36x \\ x = \frac{7}{36} [/tex]
