Решите уравнение:
а) (3х + 5x) * 18 = 144;
б) (7у − 3у) : 8 = 17;
в) (6a + a) : 13 = 14;
г) 48 : (9b − b) = 2.
(3х + 5x) * 18 = 144
8х = 144 : 18 = 8
x = 8 : 8 = 1
(7у − 3у) : 8 = 17
4y = 17 * 8 = 136
у = 136 : 4 = 34
(6a + a) : 13 = 14
7a = 14 * 13 = 182
a = 182 : 7 = 26
48 : (9b − b) = 2
8b = 48 : 2 = 24
b = 24 : 8 = 3