Answer:
10/21
Step-by-step explanation:
5
7
+
2
3
=
5 × 3
7 × 3
+
2 × 7
3 × 7
=
15
21
+
14
21
=
15 + 14
21
=
29
21
=
1 8
21
Answer:
1 and 4
Step-by-step explanation:
Submit a picture of the problem
Answer:
D
Step-by-step explanation:
3,11,23, and 31 can only be divided by 1 without becoming a decimal.