Question

I’m not sure what I’m doing wrong The answer I get is not an option

Answer 1

So a property of parallelograms is that consecutive angles are supplementary, or add up to 180. Using this information, this is our equation:
`30+5x+15+10x=180`

Firstly, combine like terms:
`15x+45=180`

Next, subtract 45 on both sides of the equation:
`15x=135`

Lastly, divide both sides by 15 and your answer is x = 9, or D.