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Please do the question 1- 9 th part

Dear Student,

Q 1 . (ix) Add \frac{8}{5} x + \frac{11}{7} y + \frac{9}{4} xy and - \frac{3}{2} x - \frac{5}{3} y - \frac{9}{5} xy = (\frac{8}{5} x + \frac{11}{7} y + \frac{9}{4} xy) + (- \frac{3}{2} x - \frac{5}{3} y - \frac{9}{5} xy) = \frac{8 x}{5} - \frac{3 x}{2} + \frac{11 y}{7} - \frac{5 y}{3} + \frac{9 xy}{4} - \frac{9 xy}{5} = \frac{16 x - 15 x}{10} + \frac{33 y - 35 y}{21} + \frac{45 xy - 36 xy}{20} = \frac{1}{10} x - \frac{2}{21} y + \frac{9}{20} xy

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