Question

Simplify the following expression using only positive exponents. Help please!?

Answer 1

`\bf a^{-{ n}} \implies \cfrac{1}{a^( n)}\qquad \qquad \cfrac{1}{a^( n)}\implies a^{-{ n}}\\\\ -----------------------------\\\\ thus\implies \cfrac{-9t^(25)}{7t^(26)}\implies \cfrac{-9}{1}\cdot \cfrac{t^(25)}{1}\cdot \cfrac{1}{t^(26)}\cdot \cfrac{1}{7} \\\\\\ \cfrac{-9}{1}\cdot \cfrac{t^(25)}{1}\cdot t^(-26)\cdot \cfrac{1}{7}\implies \cfrac{-9}{1}\cdot \cfrac{t^(25)t^(-26)}{1} \cdot \cfrac{1}{7}\implies \cfrac{-9}{1}\cdot \cfrac{t^(25-26)}{1} \cdot \cfrac{1}{7}`


`\bf \cfrac{-9}{1}\cdot \cfrac{t^(-1)}{1} \cdot \cfrac{1}{7}\implies \cfrac{-9}{1}\cdot \cfrac{1}{t^(1)} \cdot \cfrac{1}{7}\implies \cfrac{-9}{7t}`