\(\frac{3}{5}\)x\(X+X\)x\(2+40=53\)
\(Xx\left(\frac{3}{5}+2\right)+40=53\)
\(X\)x\(\frac{13}{5}=53-40\)
\(X\)x\(\frac{13}{5}=13\)
\(X=13:\frac{13}{5}\)
\(X=5\)
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