Define a variable. Then write each phrase as an algebraic expression.

1.Three more pancakes than his brother ate.

explain why is this the answer

A variable is a letter to represent an unknown number.

1. x+3

Since we don't know how much his brother ate, we put a variable for it. It doesn't have to be x, it can be b or t or any other letter.

And since it's 3 more, it's adding.

So, variable (x) + 3

(x)+3

This was helpful with my homework. So thanks.

I think this is the answer because I worked it out.

To define a variable means to assign a symbol or letter to represent an unknown quantity or value in an equation or problem. In this case, let's define a variable, such as "x," to represent the number of pancakes.

Now let's write the phrase "Three more pancakes than his brother ate" as an algebraic expression using the variable x.

If his brother ate x number of pancakes, then "three more pancakes than his brother ate" would be written as:

x + 3

The addition of 3 represents the three additional pancakes compared to what his brother ate.

To explain why this is the answer, we can break it down logically. If the number of pancakes his brother ate is represented by x, and we want to find the total number of pancakes that he ate, we need to add 3 more pancakes. Hence, we add 3 to x, resulting in the algebraic expression x + 3.

Three more pancakes than his brother ate