Question

(3‐¹ + 4-¹)×3² evaluate​

Answer 1

When you will do reciprocal of power it will be positive ..

Hope it helps you...

Answer 2

$\large \frak{ {3}^{( - 1)} + {4}^{( - 1)} \times {3}^{2} } \\ \\ \frak{= \bigg( \frac{1}{3} + \frac{1}{4} \bigg) \times 9} \\ \\ \frak{ = \bigg(\frac{4 + 3}{12} \bigg) \times 9} \\ \\ \frak{ = \: \: \: \frac{7}{ \cancel{12}} \times \cancel9} \\ \\ \sf= \: \: \: \: \: \frac{7 \times 3}{4} = \frac{21}{ {2}^{2} } \\ \\ = \sf \: \: \: \red{21 \times {2}^{ (- 2)} }$