Question

Please help7x^2z}{-3x^2z^6} " alt=" \frac{27x^2z}{-3x^2z^6} " align="absmiddle" class="latex-formula">

Answer 1

Answer:  $- \frac{9}{z^5}$

Explanation:

The simplification of that expression is done in this way:

1) The negative sign is placed in front of the whole fraction

2) 27 is divided by 3 resulting in 9: 27 / 3 = 9

3) x^2 on the numerator cancels out with x^2 of the denominator

4) z on the numerator is cancelled out with 1 z of the denominator and the result is z^5 in the denominatoir.

All that yields to :
    
      9
- --------
    z^5

Using the math editor it is:  $- \frac{9}{z^5}$