Сначала, решим пример:

(-0.9) ^ 2 * (-5 / 9) + (1.53 + 1.5 - (1 + 1/5)) =

(-0.9) * (-0.9) * (-5 / 9) + (3.03 - 1.2) =

(-0.9) * (0.9 * 5 / 9) + 1.83 =

(-0.9) * 0.5 + 1.83 =

-0.45 + 1.83 =

1.38

4% = 0.04

0.04 * А = 1.38

А * 1 / 25 = 1.38

А = 1.38 * 25

А = 34.5