Question

resuelva (-5/5)*(-4/4)*7=

Answer 1

Recordemos ley de signos:

(-)×(-)= +
(+)×(+)= +
(-)×(+)= -
(+)×(-)= -

(-5/5)×(-4/4)×7=
(-1)×(-1)×7=
+1×7=
7