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if a,b,c,d are in proportion, prove that (5a+7b) (2c-3d) = (5c+7d) (2a-3b) ps- when i tried, my LHS & RHS are not coming equal.
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if a,b,c,d are in proportion, prove that (5a+7b) (2c-3d) = (5c+7d) (2a-3b) ps- when i tried, my LHS & RHS are not coming equal.