Answer:

1 GCF = 7

LCM = 42

2 GCF = 3

LCM = 72

3 GCF = 5

LCM = 75

4 GCF = 5

LCD = 280

5 GCF = 4

LCD = 80

Step-by-step explanation:

1). GCF

Just find a nuber which both the number 14 and 21 is divisible

LCD = 14×21= 294

= 294/7

= 42

2). GCF Just find the greatest factor where in both the given is divisible

LCD = 9×24=216

= 216/3

= 72

so on and so forth

you just first need to find the gcf of the given by using the listing the tree or any method you are used to use then to get the lcd you just need to multiply the first number by the second one then divide the product with the gcf

hope it helps and make this the brainliest answer please