### Home > AC > Chapter 2 > Lesson 2.1.8 > Problem 2-78

2-78.

Use Guess and Check to solve the problem below. Then state your solution in a sentence. .

Mairé is thinking of two numbers. When she adds them, she gets

Use the Guess and Check table in the eTool below to solve.

Click the link at right for the full eTool version: *AC 2-78 HW eTool*