Daniel sold half of his comic books and then bought sixteen more . he now has 37 . with how many did he begin with?

42 comic books

Step-by-step explanation:

We can write an equation for this. Let x be the original amount of comic books.

+ 16 = 37

Now that we have our equation, we can start solving it. Our goal is to get x by itself. Let's first move the 16 to the right of the equals sign. Remember, "change side, change sign."

= 37 - 16

Subtract.

= 21

Now, we can see that x is being divided by 2. To get x by itself, we must also multiply it by 2. We also have to multiply the 21 by 2 because what you do to one side of the equation, you must do to the other.

2 · = 21 · 2

The 2's on the left side will cancel each other out, leaving us with x.

x = 21 · 2

Multiply.

x = 42

1 mph

step-by-step explanation:

if the question is asking how much does she drive per mile then,

13 / 13 = 1 mph