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10 months ago

In the diagram ABC is equal to DEC what is the value of x?

Mathematics

1 answer:

Hatshy [7]10 months ago

4 0

$\begin{gathered} \frac{25}{5}=\frac{18-x}{x} \\ 25x=(18-x)\times5 \\ 25x=90-5x \\ 25x+5x=90-5x+5x \\ 30x=90 \\ \frac{30x}{30}=\frac{90}{30} \\ x=3 \end{gathered}$

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