1. Решите уравнение: a) 8y = 62,4 + 5y; б) 3/4 x - 2/3 x + 1 = 1/2 x + 1/6.

a) 8y - 5y = 62,4
3y = 62,4
y = 20,8
б) 3/4 x - 2/3 x - 1/2 x = 1/6 - 1
(9/12 - 8/12 - 6/12)x = -5/6
-5/12 x = -5/6
x = 2