Negative numbers: addition and subtraction: Qui
Which of the following expressions are
4 8 4 9
equivalent to
+- ?
7 9 7 8
Choose 2 answers:
4
8
-
+
9
+
TIN
8
4
+15
1
-
+
+
+
8
4
8
+
+
+
7.
8.
0