Question
Answer
$$11i\cdot59+6i\cdot12+9i\cdot15+i\cdot11=867i$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}11i\cdot59+6i\cdot12+9i\cdot15+i\cdot11& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}649i+72i+135i+11i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle4}{\textcircled {4}} } }}}867i\end{aligned} $$ | |
| ① | $$ 11 i \cdot 59 = 649 i $$ |
| ② | $$ 6 i \cdot 12 = 72 i $$ |
| ③ | $$ 9 i \cdot 15 = 135 i $$ |
| ④ | Combine like terms: $$ \color{blue}{649i} + \color{red}{72i} + \color{green}{135i} + \color{green}{11i} = \color{green}{867i} $$ |
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