Question

Пж. Сррооооочно.
номер 12

Answer 1

4,6/(х+8) = 1/х
по пропорции:
4,6х = 1(х+8)
4,6х = х+8
4,6х-х = 8
3,6х = 8
х = 2,2

Answer 2

4,6 / (x + 8) = 1 / x
4,6 / (x + 8) = 1 / x, x ≠ -8, x ≠ 0
(23 / 5) / (x + 8) = 1 / x
23 / (5 * (x + 8)) = 1 / x
23x = 5(x + 8)
23x = 5x + 40
23x - 5x = 40
18x = 40
x = 20/9, x ≠ -8, x ≠ 0
x = 2 целых 2/9 или x ≈ 2,22(2)