Answer
$$7x+5(2x-10)=17x-50$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}7x+5(2x-10)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}7x+10x-50 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}17x-50\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{5} $ by $ \left( 2x-10\right) $ $$ \color{blue}{5} \cdot \left( 2x-10\right) = 10x-50 $$ |
| ② | Combine like terms: $$ \color{blue}{7x} + \color{blue}{10x} -50 = \color{blue}{17x} -50 $$ |
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