18 + (16-x×8)= 90 Решите уравнение.
18 + (16 - 8x ) = 90 18 + 16 - 8x = 90 34 - 8x = 90 - 8x = 90 - 34 - 8x = 56 8x = - 56 x = - 56/8 x = - 7