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There are a few ways to isolate a variable. First, add or subtract anything to get a monomial on one side containing the variable. Then divide by anything that is being multiplied to the variable. Here is an example:

xy-4z=2z-4y solving for x

xy=(2z+4z)-4y

xy=6z-4y

x=(6z-4y)/y

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Q: How do you isolate a variable in a equation?
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