How to write an equation for math problem

Question

Bree counted 51 birds at the park. Twenty-seven were geese and the rest were ducks. The ducks flew away in groups of 8. How many groups of ducks were there? Write an equation with a letter for the unknown. Then solve.

Answer 1

Let x - the number of groups of ducks

 

The number of groups will be the number of ducks divided by 8

 

The number of ducks is 51-27

 

Putting everything into one equation, it looks like this:

 

x =  51-27

          8         

 

Solve that, and x= 3

 

Make sense?  

Mary