Question
Answer
$$r\cdot64+r-9-r\cdot36-r-4=28r-13$$
Explanation
| $$ \begin{aligned}r\cdot64+r-9-r\cdot36-r-4& \xlongequal{ }64r+ \cancel{r}-9-36r -\cancel{r}-4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}28r-13\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{64r} + \, \color{red}{ \cancel{r}} \, \color{orange}{-9} \color{blue}{-36r} \, \color{blue}{ -\cancel{r}} \, \color{orange}{-4} = \color{blue}{28r} \color{orange}{-13} $$ |
This page was created using
Complex Expression calculator