Найдите неизвестный член пропорции:a) t/-1,9 = - 7,8/-5,7b) - 5,6/70 = - 8,4/mc) 1,12/s = 1,65/-1,98d) - 25,5/15,3 = k/-32,3

a) t / (-1,9) = - 7,8 / (-5/7)

t * (-5,7) = - 1,9 * (-7,8)

t * (-5,7) = 14,82

t = 14,82 / (-5,7)

t = - 2,6

b) - 5,6/70 = - 8,4/m

-5,6m = - 8,4*70

-5,6m = - 588

m = - 588 : (-5,6)

m = 105

c) 1,12/s = 1,65 / (-1,98)

1,65s = (-1,98) * 1,12

1,65s = - 2,2176

s = (-2,2176) / 1,65

s = - 1,344

d) - 25,5/15,3 = k / (-32,3)

(-25,5) * (-32,3) = 15,3k

823,65 = 15,3k

k = 823,65 : 15,3

k = 53 85/102

k = 53,8 (3)