### Home > CC2MN > Chapter 7 > Lesson 7.2.1 > Problem 7-55

7-55.

When Lakeesha solved the equation

“*Since groups of equals 3 groups of , then I know that each group of must equal .”*

Do you agree with her reasoning? Explain.

Recall the Equation Mat from problem 7-54.

Each group ofcorresponds to each group of . How can the result of Lakeesha’s reasoning be written?

Verify that your answer from problem 7-54 will make the equation you wrote in part (b) true.

Substitute your answer from problem 7-54 into the equation above and see if the equation is true.