If x : y = 7 : 9 then 3x – 5y : 4x + y = ?

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The UGC NET General Paper on Teaching & Research Aptitude is an exam designed to test the teaching and research skills of Indian teachers to determine their eligibility for college lectureship. 
 


If <em>x : y = </em>7 : 9 then 3<em>x </em>– 5y : 4<em>x </em>+ y = ?