Question

Determine which property of real numbers is used to simplify the expression.4 minus 5 plus 6 minus 7 plus 8 minus 9equals open parentheses 4 minus 5 close parentheses plus open parentheses 6 minus 7 close parentheses plus open parentheses 8 minus 9 close parentheses

Answer 1

In this case, in order to obtain the right hand side of our equation, we applied the associative property, which leads to

$\begin{gathered} 4-5=(4-5) \\ 6-7=(6-7) \\ 8-9=(8-9) \end{gathered}$

then, the answer is option A