If 2m−6=8m then 3m= a. 3 b. -1 c. -3 d. -6 e. i don't know.

For this case we have to:

If we subtract 8m on both sides of the equation, we have:

Adding 6 to both sides of the equation:

Dividing between -6 on both sides of the equation:

So:

If we want to know the value of 3m, then:

Option C

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.