Can someone please help me!! I don’t understand at all

1 answer:

5 0

$\bf \underset{\leftarrow \qquad \textit{\Large x+14}\qquad \to }{\stackrel{8}{\boxed{A}\rule[0.35em]{10em}{0.25pt}} B\stackrel{2x+10}{\rule[0.35em]{17em}{0.25pt}\boxed{C}}} \\\\\\ \stackrel{AC}{x+14}~~=~~\stackrel{AB}{8}+\stackrel{BC}{2x+10}\implies x+14=2x+18 \\\\\\ 14=x+18 \implies -4=x$

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