(2,3-m):\frac{3}{5} = 0,12

Решим уравнение:

1. $$(2{,}3-m):\frac{3}{5} = 0{,}12$$
2. $$2{,}3-m = 0{,}12 \cdot \frac{3}{5}$$
3. $$2{,}3-m = \frac{0{,}12 \cdot 3}{5}$$
4. $$2{,}3-m = \frac{0{,}36}{5}$$
5. $$2{,}3-m = 0{,}072$$
6. $$m = 2{,}3 - 0{,}072$$
7. $$m = 2{,}228$$

Ответ: m = 2,228