Ineed with this problem. the book explains it complicated fouty-two people have registered for a raffle. if there are twice as many children as adults signed up, how many children ate registered for the raffle?

To solve the problem, find an equation for the number of children and adults at the raffle, 2c+a=42, where c is number of children and a is number of adults. In this problem, we will go back to this equation, but to solve we will need to change everything to x's.

2x+x=42 
3x=42
x=14.

We will now go back to the original equation that we set up, 2c+a=42 and realize that we need to multiply x by 2 (2c), therefore, there are 28 children registered for the raffle.

You need to plug it in an equation

but the answer is 14