Tap the blue circles to see an explanation.
$$ \begin{aligned}2x\cdot4-3x\cdot3+5x\cdot2-6& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}8x-9x+10x-6 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle4}{\textcircled {4}} } }}}9x-6\end{aligned} $$ | |
① | $$ 2 x \cdot 4 = 8 x $$ |
② | $$ 3 x \cdot 3 = 9 x $$ |
③ | $$ 5 x \cdot 2 = 10 x $$ |
④ | Combine like terms: $$ \color{blue}{8x} \color{red}{-9x} + \color{red}{10x} -6 = \color{red}{9x} -6 $$ |