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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 [tex]3(2x-6)+4x+9=180[/tex]


And distribute:


[tex]6x-18+4x+9=180[/tex]


Then combine like terms:


[tex]10x-9=180[/tex]


[tex]10x=189[/tex]


And solve for x:


[tex]x=18.9[/tex]


So x=18.9

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