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If a : b = c : d, prove that : (i) 5...

If `a : b = c : d`, prove that :
(i) `5a + 7b : 5a - 7b = 5c + 7d : 5c - 7d`.
(ii) `(9a + 13b) (9c - 13d) = (9c + 13d) (9a - 13b)`.
(iii) `xa + yb : xc + yd = b : d`

Answer

Step by step text solution for If a : b = c : d, prove that : (i) 5a + 7b : 5a - 7b = 5c + 7d : 5c - 7d. (ii) (9a + 13b) (9c - 13d) = (9c + 13d) (9a - 13b). (iii) xa + yb : xc + yd = b : d by MATHS experts to help you in doubts & scoring excellent marks in Class 10 exams.

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