Решить уравнение 84-(124-(x+3))=28
84-124-х+3=2884-124-28+3=хх=-65
84-28=56
124-56=68
68-3=65
124 - (X + 3) = 84 - 28 124 - ( X + 3 ) = 56 124 - 56 = X + 3 68 = X + 3 X = 65