Step-by-step explanation:
[tex] \frac{12x}{3 {x}^{2} } \\ [/tex]
First divide 12 by 3
[tex] \frac{12}{3} = 4[/tex]
then divide x by x^2
[tex] \frac{x}{ {x}^{2} } \\ \frac{ {x}^{1} }{ {x}^{2} } \\ {x}^{1 - 2} \\ {x}^{ - 1} [/tex]
now you can write the answer like this
[tex]4 {x}^{ - 1} [/tex]
Hope this helps you :-)
Let me know if you another questions :-)
