B - 7
B is the number of dollars Ben has and Cam has 7 less so you just subtract 7 from b
Answer:
1. gcd(77,30)=1

Since 1 is the last non zero remainder appearing in these equations then, 1 is the gcd of 77 and 30.
2. u=-11, v=18
Using the Euclidean Algorithm we have that

Now, we express the remainder as linear combinations of 49 and 30.

Then 
3. x=18
If
then
for some
.
Then, if k=7,

It’s six because, 1/2 is half. And a foot long is twelve inches. And half of twelve is six.
Answer:

Step-by-step explanation:


Hope this helps
Simply present that you would split them up as a factor of two. ( make two lines going either vertically or horizontally. place in varriations, a marble in one line and a marble in the other and then count the leftover