А5. Решите уравнение: а+4\(\frac{2}{5}\)=10

Решим уравнение a + 4\(\frac{2}{5}\) = 10.

a = 10 - 4\(\frac{2}{5}\)

a = 10 - \(\frac{4 \cdot 5 + 2}{5}\)

a = 10 - \(\frac{22}{5}\)

a = \(\frac{10 \cdot 5}{5} - \frac{22}{5}\)

a = \(\frac{50}{5} - \frac{22}{5}\)

a = \(\frac{28}{5}\)

a = 5\(\frac{3}{5}\)

Ответ: 5\(\frac{3}{5}\)