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5. Fill in the blanks:(i) \( \left(\frac{-3}{17}\right)+\left(\frac{-12}{5}\right)+\left(\frac{-12}{5}\right)+(\ldots \ldots) \)(ii) \( -9+\frac{-21}{8}=(\ldots \ldots)+(-9) \).(iii) \( \left(\frac{-8}{13}+\frac{3}{7}\right)+\left(\frac{-13}{4}\right)=(\ldots \ldots)+\left[\frac{3}{7}+\left(\frac{-13}{4}\right)\right] \)(iv) \( -12+\left(\frac{7}{12}+\frac{-9}{11}\right)=\left(-12+\frac{7}{12}\right)+(\ldots \ldots) \) |
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Answer» (i) \((\frac{-3}{17})+(\frac{-12}5)=(-\frac{12}5)+(\frac{-3}{17})\) By Commutative law (ii) \(-9+(\frac{-21}8)=(\frac{-21}8+(-9))\) (By Commutative law) (iii) \((\frac{-8}{13}+\frac37)+(-\frac{13}4)=(\frac{-8}{13})+[\frac37+(\frac{-13}4)]\) (By associative law) (iv) \(-12+[\frac7{12}+(\frac{-9}{11})]=(-12+\frac7{12})+(\frac{-9}{11})\) (By associaive law) |
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