Question

Which of the following equations uses the commutative property of addition to rewrite ?

Answer 1

The commutative property of the addition is:

$a+b=b+a;a,b\in\mathfrak{\Re }$

Where a and b are any numbers.

Therefore, in case of our problem

$\begin{gathered} \frac{1}{4}+\frac{2}{5}=a+b=b+a=\frac{2}{5}+\frac{1}{4} \\ \Rightarrow\frac{1}{4}+\frac{2}{5}=\frac{2}{5}+\frac{1}{4} \end{gathered}$

Then, the solution is

$\frac{2}{5}+\frac{1}{4}=\frac{13}{20}$

The solution is the first option