Question

Simplify:$\frac{42x^3{y}^2{z}^4}{6x{y}^2{z}^3}$

Answer 1

Property: $\frac{a^m}{a^n}=a^{m-n}$
$\frac{42x^3{y}^2{z}^4}{6x{y}^2{z}^3}$
$=\frac{42}{6}\cdot x^{3-1}{y}^{2-2}{z}^{4-3}$
$=7x^{2}z$