2.212 Решите уравнение: a) (x - 47) + 63 = 100; б) 120 – (x + 96) = 24; в) 48 + (56 – x) = 48; г) (90 - x) – 32 = 58.

a) (x - 47) + 63 = 100 x - 47 = 100 - 63 x - 47 = 37 x = 37 + 47 x = 84 б) 120 – (x + 96) = 24 -(x + 96) = 24 - 120 -(x + 96) = -96 x + 96 = 96 x = 96 - 96 x = 0 в) 48 + (56 – x) = 48 56 - x = 48 - 48 56 - x = 0 -x = -56 x = 56 г) (90 - x) – 32 = 58 90 - x = 58 + 32 90 - x = 90 -x = 90 - 90 -x = 0 x = 0