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Solve: 3n – 13 = 13n + 31.(a) \(\frac{22}{5}\)(b) \(\frac{-22}{5}\)(c) \(\frac{-44}{10}\)(d) \(\frac{44}{10}\)I have been asked this question during a job interview.My question is from Reduce the Linear Equation and Find the Value of the Variable topic in chapter Linear Equations in One Variable of Mathematics – Class 8

Answer»

Right choice is (b) \(\FRAC{-22}{5}\)

The BEST explanation: 3N – 13 = 13N +31

∴3n – 13n = 31 + 13

∴-10n = 44

∴n = \(\frac{-44}{10} = \frac{-22}{5}\).



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