9x-7=-7 how do you solve this problem

Well, if we're looking for the value of "x" then follow these following steps! 

Our first step: 9(x) - [-7] = ?
 The "?" = 0 

Our second step 2: Solve this one → 9(x) = ? 
Remember that I said "?" equals to 0 

Our  third step: we have to divide by the number "9" on each of your sides

Our fifth step/your answer is:   

Oh and if you wanted to find out how many solution that it has, it would be One Solution 

There's not that much steps to this solution 

Ok, so this is a subtraction problem with fractions.  The first step is to write the equation you need to make.

12 1/2  -  8 2/3

Next would be to change the mixed fractions to improper fractions.

25/2  -  26/3

Now, we need to find a common denomintor, since we can't just subtract like it is now.  The Lowest Common Denominator would be 6 because 2*3 = 6.  So we need to multiply the numerator and the denominator of both fractions, so that they will have the same denominator.

3( 25/2 )  -  2( 26/3 )

75/6  -  52/6

Now we just subtract the numerators and leave that new answer over the same denominator.

75/6  -  52/6  =  23/6

If it asks to simplify into fraction, we can put it as,

3 5/6