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jessierose2017

You didn't even write down the problem that we need to solve?

baseballboyg

Since the two angles are supplementary, they add up to 180.  So the equation would be \(3(2x-6)+4x+9=180\)


And distribute:


\(6x-18+4x+9=180\)


Then combine like terms:


\(10x-9=180\)


\(10x=189\)


And solve for x:


\(x=18.9\)


So x=18.9

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