The video describes how to find 'x' in the algebraic equation

-3x + 7x - 6 = 30

The equation is solved on a white board by hand.

The method shown uses the following steps:

Firstly both 'x' terms are added together to get the equation 4x - 6 = 30.

Then 6 is added to both sides to get 4x = 36.

Now we divide both sides by 4, to get x = 9.

Once the equation is solved, the video then goes over how to check that your solution is correct, by substituting 9 in for 'x' and making sure both sides have the same value.

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