\(\Leftrightarrow x\cdot\dfrac{18}{5}+x\cdot\dfrac{17}{6}-x\cdot\dfrac{10}{7}+x\cdot\dfrac{1}{8}=\dfrac{15}{8}\)
\(\Leftrightarrow x\cdot\dfrac{4309}{840}=\dfrac{15}{8}\)
=>x=1575/4309
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