Question
Answer
$$12y\cdot5+14y\cdot5-y\cdot3-3y\cdot3=118y$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}12y\cdot5+14y\cdot5-y\cdot3-3y\cdot3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}60y+70y-3y-9y \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle4}{\textcircled {4}} } }}}118y\end{aligned} $$ | |
| ① | $$ 12 y \cdot 5 = 60 y $$ |
| ② | $$ 14 y \cdot 5 = 70 y $$ |
| ③ | $$ 3 y \cdot 3 = 9 y $$ |
| ④ | Combine like terms: $$ \color{blue}{60y} + \color{red}{70y} \color{green}{-3y} \color{green}{-9y} = \color{green}{118y} $$ |
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