2. Реши уравнение m – 2/11 m = 9,9.

Решение:

$$m - \frac{2}{11}m = 9,9$$

$$\frac{11}{11}m - \frac{2}{11}m = 9,9$$

$$\frac{9}{11}m = 9,9$$

$$m = 9,9 : \frac{9}{11}$$

$$m = 9,9 \cdot \frac{11}{9}$$

$$m = \frac{99}{10} \cdot \frac{11}{9} = \frac{11}{10} \cdot \frac{11}{1} = \frac{121}{10} = 12,1$$

Ответ: 12,1