You take alll the answers and just divide each one
So to put your equation into algebraic terms, your asking for
.
Firstly, we have to convert these into fractional exponents. The rule to do that is
. Applying that here, our equation is 
Next, the rule with dividing exponents with the same base is to just subtract the exponents, so with this we are subtracting 1/5 from 1/3. However, we need to find their LCM, or lowest common multiple, of 3 and 5. You can do this by listing out what numbers 3 and 5 are factors of. In this case, the LCM is 15. Multiply 1/3 by 5/5 and 1/5 by 3/3:

Now that they share the same denominator, subtract the numerators of the 2 fractional exponents and your answer will be
, or the last option.
600000 is 1/10 of "x", that means x = 10/10 or a whole, what is "x"?
The answer you are looking for is x=12.
Solution/Explanation:
Writing out the equation first:
-28=2x+8-5x
Combine like terms
-28=2x-5x+8
Simplify
-28=-3x+8
Now, subtract 8 from both sides
-28-8=-3x+8-8
8-8 cancels out, since it equals 0.
-28-8=-3x+0
-28-8=-3x
Simplifying the left side
-36=-3x
Finally, dividing both sides by -3
-36/-3=-3x/-3
You will get 12=x, or x=12.
So, therefore, the final answer to this problem is simply x=12.
Hope this helped answer your question for you. Good day to you.