Solving in Wolfram Alpha

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If you want to solve an equation in WolframAlpha simply type:

Solve 3×2+x-7=4x

The neat thing here is that not only will WolframAlpha solve the equation, but it will also show you the steps!! Although, throwing in absolute values is going to confuse some of the students, since a lot of them don’t know that:

sqrt ( x^2 ) = | x |

Wolfram Alpha Solving Equations