Answer:

Step-by-step explanation:
1. Subtract 3x from both sides
3x-8y-3x=24-3x
2. Simplify
-8y=24-3x
3. Divide both sides by -8

4. Simply again to get answer.
Answer:
See Explanation
Step-by-step explanation:

Answer:
x = 5
Step-by-step explanation:
a) The third interior angle of this triangle is 180 - 20 x.
The three interior angles must sum up to 180 degrees.
Therefore, 60 + 7x + 5 + 180 - 20x = 180, or
65 + 180 - 13x = 180, or
65 - 13x = 0
Finally, 13x = 65, and so x = 5
Answer:
48
To start you will find the area as if it was a rectangle. To do that you have to do 8x12. 8x12 = 96, but to find the area of a triangle you take the area of the rectangle and divide it by 2. 96 divided by 2 is equal to 48.
There are other methods of solving this but I think this is the easiest way!
Start by simplifying each expressions by factoring