An **equation** is a statement that two quantities are equal. An **inequality** is a statement comparing two quantities that may or may not be equal. As we can compare one real number to another, we can compare a real number and a variable. This may seem a little like comparing apples and oranges, but is it really hard to compare apples and oranges? Apples are redder, oranges have more stuff to peel off. Thereâ€”done.

We can represent inequalities using words, symbols, or pictures on a number line.

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