Answer
$$5(7d-2)+4d=39d-10$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}5(7d-2)+4d& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}35d-10+4d \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}39d-10\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{5} $ by $ \left( 7d-2\right) $ $$ \color{blue}{5} \cdot \left( 7d-2\right) = 35d-10 $$ |
| ② | Combine like terms: $$ \color{blue}{35d} -10+ \color{blue}{4d} = \color{blue}{39d} -10 $$ |
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