Rebecca wants to split a collection of eggs into 1 groups. Rebecca has 18 eggs and 42 marbles. How many eggs will each group have?
1. Rebecca wants to split a collection of eggs into 1 groups. 
2. She has 18 eggs and 42 marbles. 
3. How many eggs will each group have?

In this problem, we are looking for the number of eggs in each group. Since Rebecca wants to split her collection into 1 groups, that means each group will have the same number of eggs. 

We can set up an equation to solve for the number of eggs in each group, using the information given. We know that Rebecca has a total of 18 eggs, and she wants to split them into 1 groups. So we can write: 

18 = x

This equation says that the total number of eggs (18) is equal to the number of eggs in each group (x). 

We can solve for x by using algebra. We know that 18 = x, so we can add x to both sides of the equation to get: 

18 + x = x + x

On the left side of the equation, we have 18 + x. On the right side of the equation, we have x + x. 

Now we can simplify each side of the equation. On the left side