Get out your timer and number two pencil to see if your arithmetic skills from grade school are still intact.

An equation is a mathematical statement showing that two expressions are equal. The two expressions are linked with an equals symbol (=). The unknown variable (often the letter \(x\)) can take any ...

Learn how to solve two-step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two-step linear equation, we first isolate ...

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Adjust the colors to reduce glare and give your eyes a break. Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to PBS ...