Tap the blue circles to see an explanation.
| $$ \begin{aligned}x-(2y+3x)-2y& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}x-2y-3x-2y \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-2x-4y\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2y+3x \right) = -2y-3x $$ |
| ② | Combine like terms: $$ \color{blue}{x} \color{red}{-2y} \color{blue}{-3x} \color{red}{-2y} = \color{blue}{-2x} \color{red}{-4y} $$ |