$$ \begin{aligned}-(2x-5y)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-2x+5y\end{aligned} $$ | |
① | Remove the parentheses by changing the sign of each term within them. $$ - \left(2x-5y \right) = -2x+5y $$ |