Respuesta :
The answer is 4.75 because -2 3
4
+
3 5
7
= (-2 + 3) + (
-3
4
+
5
7
)
= 1 +
-3 × 7
4 × 7
+
5 × 4
7 × 4
= 1 +
-21
28
+
20
28
= 1 +
-21 + 20
28
= 1 +
-1
28
=
27
28
The answer is 4.75 because -2 3
4
+
3 5
7
= (-2 + 3) + (
-3
4
+
5
7
)
= 1 +
-3 × 7
4 × 7
+
5 × 4
7 × 4
= 1 +
-21
28
+
20
28
= 1 +
-21 + 20
28
= 1 +
-1
28
=
27
28
