-5/9 x 8/5 =
-5/4 + 6/4 =
1/4 es equivalente a
4/20 es equivalente a
-7/2 x (-5/3)
-5/4 + (-6/4) =
8/2 x (-2/5) =
1/2 x 3/2 =
9/3 + (-10/3) =
-1/4 + (-2/4) =
35/6
3/4
-40/45
-11/4
-3/4
1/5
-16/10
-1/3
3/12
1/4
