can someone help me solve this please?

Question

simplify the expression .write the result using positive exponents only.assume that all base are not equal to 0   5^6z^-1/5^7z^-4

 

Answer 1

Marie, I think you repeated the question, but I'm not sure if you written everything correctly. Is it  (5⁶z^-1)/(5⁷z^-4)?

 

Answer 2

If your expression is meant what I thought, then

(5⁶z^-1)/(5⁷z^-4)=5^6-7z^-1-(-4)=5^-1z³=z³/5.