q = 12 / 24 = 0.5
S = 24 / (1 - 0.5) = 24 / 0.5 = 48
Ответ: 48
q = 1 / 5 = 0.2
S = 5 / (1 - 0.2) = 5 / 0.8 = 6.25
Ответ: 6.25
q = -3 / 9 = -1/3
S = 9 / (1 - (-1/3)) = 9 / (4/3) = 9 * (3/4) = 27/4 = 6.75
Ответ: 6.75