B=3×53​+5×73​+7×93​+...+48×503​ 

\(B = \frac{3}{2} \times \left(\right. \frac{2}{3 \times 5} + \frac{2}{5 \times 7} + \frac{2}{7 \times 9} + . . . + \frac{2}{48 \times 50} \left.\right)\) 

\(B = \frac{3}{2} \times \left(\right. \frac{1}{3} - \frac{1}{5} + \frac{1}{5} - \frac{1}{7} + \frac{1}{7} - \frac{1}{9} + . . . + \frac{1}{48} - \frac{1}{50} \left.\right)\) 

\(B = \frac{3}{2} \times \left(\right. \frac{1}{3} - \frac{1}{50} \left.\right)\)

\(B = \frac{3}{2} \times \frac{47}{150}\) 

\(B = \frac{47}{100}\) 

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Tìm số nguyên X biết -4/x+2=x+2/-16