There will probably be some algebra questions on your ASVAB test, so it’s a good idea to spend some time studying basic algebra concepts and practicing solving algebra problems.

**Solving Equations.** An equation is a math expression in which one quantity or set of quantities is stated to be equal to another. Often one of the quantities in an equation will have an unknown value. This unknown is represented by a letter such as *x*. Because the quantities in an equation are equal to each other, you can use that equality to *solve* the equation and find the value of the unknown.

Here is a very simple equation:

2 + *x* = 10

The unknown number *x* must have a value that, when added to 2, equals 10. So *x* must be 8. Normally ...

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