### Home > CAAC > Chapter 2 > Lesson 2.1.1 > Problem 2-11

2-11.

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

Click the link at the right to view full eTool version: AC 2-11 HW eTool.

Substitute numbers into Part 1.

Subtract 18 from Part 1 to get Part 2.

Add Part 1 and Part 2. Does your sum equal 84? If not try another number.