400 - 173 - x = 60
227 - x = 60
x = 227 - 60
x = 167
504 - x - 239 = 120
265 - x = 120
x = 265 - 120
x = 145
Ответ: x = 167, x = 145
400 - 173 - x = 60
227 - x = 60
x = 227 - 60
x = 167
504 - x - 239 = 120
265 - x = 120
x = 265 - 120
x = 145
Ответ: x = 167, x = 145