Respuesta :

DivineSolar
400 - 2*Age = 244 <<
-2 * Age = -156
So our age = 78 years, months, days, hours since there were no actual units supplied.
400 - 2x = 244
-2x = 244 - 400
-2x = -156
x = -156/-2
A better example above as above was just a simplified version.