Question

Which fraction expresses 36/80 in lowest terms?



A. 9/20




B. 18/40




C. 4/5




D. 18/20

Answer 1

A

Answer 2

$$
\cfrac{36}{80}=\\
\cfrac{2\times18}{2\times40}=
\cfrac{\cancel{2}\times18}{\cancel{2}\times40}=\cfrac{18}{40}\\
=\cfrac{2\times9}{2\times20}=\cfrac{\cancel{2}\times\color{red}9}{\cancel{2}\times\color{red}{20}}
$$

Answer 3

what

Answer 4

she said a and you say b counfused

Answer 5

\(
\cfrac{9}{20}
\)is the answer
\(
\cfrac{18}{40}
\) can be reduced further, which is what I did above because both 18 and 40 have 2 as a common factor.

Let me know if you are still confused.