# One-variable linear inequalities

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Contents

Algebraic inequalities (inequalities with variables) are useful for describing real-world situations. Learn how to write inequalities and graph them on the number line.

Learn how to solve (mathematical) inequalities. A key concept in this tutorial is flipping the inequality sign when multiplying or dividing both sides by a negative number.

Learn how to solve more complex (mathematical) inequalities. Also learn to construct inequalities to model real-world situations.

Solve any possible linear inequality in one variable. For example, solve -3x-7<x+9.

Learn how to solve compound inequalities. For example, solve 2x+1>3 AND -x-5<4.