5.520 Решите уравнение: a) 2/3 * x = 1; б) 51/62 * y = 1; в) 3/10 * a = 1; г) 104/183 * b = 1; д) 7/25 * x = 7/25; e) 13/6 * y = 13/6.

a) 2/3 * x = 1

x = 1 / (2/3) = 1 * 3/2 = 3/2 = 1.5

б) 51/62 * y = 1

y = 1 / (51/62) = 1 * 62/51 = 62/51 ≈ 1.22

в) 3/10 * a = 1

a = 1 / (3/10) = 1 * 10/3 = 10/3 ≈ 3.33

г) 104/183 * b = 1

b = 1 / (104/183) = 1 * 183/104 = 183/104 ≈ 1.76

д) 7/25 * x = 7/25

x = (7/25) / (7/25) = 1

e) 13/6 * y = 13/6

y = (13/6) / (13/6) = 1

Ответ: a) x = 3/2; б) y = 62/51; в) a = 10/3; г) b = 183/104; д) x = 1; e) y = 1.