Respuesta :
1/3 of the cake = 12/3 = 4 pieces for
Serah
1/4 of the cake = 12/4 = 3 pieces for her son
Fraction of cake eaten, 4 + 3 = 7/12
Fraction left, 12 - 7 = 5/12
Serah
1/4 of the cake = 12/4 = 3 pieces for her son
Fraction of cake eaten, 4 + 3 = 7/12
Fraction left, 12 - 7 = 5/12