IXL | Solve one-step addition and subtraction inequalities: word problems

An airport has enough space for 16 planes to park. There are 9 planes parked at the airport right now.

Let

represent how many more planes can park at the airport. This inequality describes the problem.

≤

Which algebra tiles model this inequality?

≤

Solve the inequality. Then, complete the sentence to describe the solution.

Up to more planes can park at the airport.

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Learn with an example

question

Once Farid spends 15 minutes on a single level in his favorite video game, he loses a life. He has already spent 10 minutes on the level he's playing now.

Let

represent how many more minutes Farid can play on that level without losing a life. This inequality describes the problem.

Which algebra tiles model this inequality?

Solve the inequality. Then, complete the sentence to describe the solution.

Farid can play less than more minutes on that level without losing a life.

solution

The inequality

describes the problem. The expression

represents the total number of minutes Farid plays. That needs to be less than 15.

You can model the inequality using algebra tiles.

The left side of the inequality is
10
+
x
.
So, the left side of your answer should have 1
x
-tile
and 10 1-tiles.
The right side of the inequality is 15. So, the right side of your answer should have 15 1-tiles.

These algebra tiles model the inequality

To solve for

remove 10 1-tiles from each side.

Simplify.

The solution to the inequality is

So, Farid can play less than 5 more minutes on that level without losing a life.

Looking for more? Try these:

Lesson: Solving inequalities

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Not feeling ready yet? These can help:

Solve one-step addition and subtraction inequalities

Write and graph inequalities: word problems

Lesson: Solving inequalities

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