Answer
$$3(x+h)=3h+3x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}3(x+h)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x+3h \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}3h+3x\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{3} $ by $ \left( x+h\right) $ $$ \color{blue}{3} \cdot \left( x+h\right) = 3x+3h $$ |
| ② | Combine like terms: $$ 3h+3x = 3h+3x $$ |
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