So I have two questions I really need help if someone could explain how to do it. It would mean a lot. I'm swamped with Homework and Math is my worst subject.

mAngleBAC = 3x + 9, mAngleABC = 8x + 11, and mAngleBCA = 5x - 8
I understand that I have to solve for X but how do I go about doing it?
b. Find the measures of Angle 1, Angle 2, and Angle 3.

Question

So I have two questions I really need help if someone could explain how to do it. It would mean a lot. I'm swamped with Homework and Math is my worst subject.

mAngleBAC = 3x + 9, mAngleABC = 8x + 11, and mAngleBCA = 5x - 8
I understand that I have to solve for X but how do I go about doing it? 
b. Find the measures of Angle 1, Angle 2, and Angle 3.

whpalmer4 · Answer

Do those angles form a triangle?  Do you know anything about the sum of the angles of a triangle?

cam7661 · Answer

I also forgot to add this.  If you could all around explain it to me so I can understand it that would be great.

whpalmer4 · Answer

Yeah, those are the interior angles of a triangle.  The interior angles of a triangle always add to 180 degrees, just like the interior angles of a rectangle always add to 360 degrees.  Use that information to write an equation involving $x$ and solve for $x$.  Then substitute the value you found for $x$ into the formula for the size of each angle.  If you find that $x=10$, for example, angle BAC $= 3x + 9$ would have value $3*10+9 = 39$