Question

Выполни действия (X - 2 1/4)*4/5=1​

Answer 1

Ответ:

$(x - 2 \frac{1}{4} ) \times \frac{4}{5} = 1 \\ \frac{4}{5} x - \frac{9}{5} = 1 \\ 4x - 9 = 5 \\ 4x = 5 + 9 \\ 4x = 14 \\ x = \frac{7}{2} \\ x = 3.5$