4. Решите уравнение 1 - 2(5-2x) = -x-3.

1 - 2(5 - 2x) = -x - 3

1 - 10 + 4x = -x - 3

-9 + 4x = -x - 3

4x + x = -3 + 9

5x = 6

x = 1.2