Answer:
all work is pictured and shown
Answer:
C
Any time you have a subtraction and a negitive right next to eachother, it means to add. So, you would add 13 and 1 to get 14, then keep the denominator 19 to get 14/19.
Step-by-step explanation:
Answer: 7
Step-by-step explanation:
5+7+9=21
3 total numbers to start with so;
21/3=7
Answer:
1
Step-by-step explanation:
Let's start by prime factorizing (finding the prime factors) of 16 and 21:


We can see that they DO NOT have any common factors, meaning that their greatest common factor is 1.
Answer:
Step-by-step explanation:
1+1=2
1+3=4
3+3=6
3+5=8
3+7=10