### Home > AC > Chapter 1 > Lesson 1.2.1 > Problem1-46

1-46.

While organizing his bookshelf, Michael noticed that he had eight more science-fiction novels than spy novels. If he owns $26$ science-fiction and spy novels, how many of each type of novel does he own? Explain how you found your solution.

Use guess and check to find your answer.

Make three columns: one for spy novels, one for science fiction novels, and one for the total.

Remember that the spy novels $+8$ equals the number of science fiction novels Michael has.

He owns $9$ spy novels and $17$ science fiction novels.