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