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If \frac{a}{b}=\frac{2}{3} , then find the values of the following expressions.(i) $ \frac{4 a+3 b}{3 b} $(iii) $ \frac{a^{3}+b}{b^{3}} $(ii) $ \frac{5 a^{2}+2 b^{2}}{5 a^{2}-2 b^{2}} $(iv) $ \frac{7 b-4 a}{7 b+4 a} $ |
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