Question

Решите уравнение: а) (х – 47) + 63 = 100; б) 120 – (x + 96) = 24; B) 48 + (56 - x) = 48; г) (90 - x) – 42 = 58.​

Answer 1

Пошаговое объяснение:

а)

$(x - 47) + 63 = 1000 \\ x - 47 + 63 = 100 \\ x + 16 = 100 \\ x = 100 - 16 \\ x = 84$

б)

$120 - (x + 96) = 24 \\ 120 - x - 96 = 24 \\ 24 - x = 24 \\ - x = 0 \\ x = 0$

в)

$48 + (56 - x) = 48 \\ 56 - x = 0 \\ - x = - 56 \\ x = 56$

г)

$(90 - x) - 42 = 58 \\ 90 - x - 42 = 58 \\ 48 - x = 58 \\ - x = 58 - 48 \\ - x = 10 \\ x = - 10$