The population of New York City is about 18.8 million people. This is about 9.9 million more people than the population of Chicago. Write and solve an equation to find the approximate population of Chicago.

Answer 1

Let x be the population of Chicago.

According to the problem, the population of New York City is about 9.9 million more people than the population of Chicago.

So we can write an equation:

18.8 million = x + 9.9 million

To solve for x, we can subtract 9.9 million from both sides:

18.8 million - 9.9 million = x

8.9 million = x

Therefore, the approximate population of Chicago is 8.9 million people.