Respuesta :
His team first gained(+) 12 yards then lost(-) 8 yards.
So for the equation, let's assume they started at 0 yards:
0 yards + 12 yards - 8 yards = 4 yards gained.
So for the equation, let's assume they started at 0 yards:
0 yards + 12 yards - 8 yards = 4 yards gained.