Resposta:
# (- 3/2) * (- 5/4) = color (blau) (15/8) #
Explicació:
#(-3/2) * (-5/4)#
#color (blanc) ("XXX") = (- 1) * (3/2) * (-1) * (5/4) #
#color (blanc) ("XXX") = (- 1) * (-1) * (3/2) * (5/4) #
#color (blanc) ("XXX") = (+ 1) * (3xx5) / (2xx4) #
#color (blanc) ("XXX") = 15/8 #
