Question

solve using the addition principal
2x+8 is less than or equal to x+9

Answer 1

Imagine like you had an \(=\) sign instead of a \(\le\) sign and solve for \(x\) just as you would normally EXCEPT for the fact that you must flip the sign if you divide both sides by a negative number (which you don't necessarily need to worry about for this one).

Show me how far you've gotten so far.

Answer 2

I havent gotten anywhere I an completely dumbfounded when it comes to algebra

Answer 3

2x + 8 <= x+9 is the given piece of information.

Now, you need to gather terms with x to one side and constants to the other. If you do that right, you get
2x - x <= 9 -8
Now, simple subtraction will get you:
x <= 1