Class 7 maths. Pls tell fast but correct.

1.	Class 7 maths. Pls tell fast but correct.
Answer» $\large\fbox\red{Answer}$ $\dag\:\underline{\sf GiveN \::}$ $\sf↦\:(\frac{2}{a})^{3} \times (\frac{2}{a}) ^{6}=(\frac{2}{a}) ^{2x-1}$ $\dag\:\underline{\sf SolutioN \::}$ $\sf↦\:(\frac{2}{a})^{3} \times (\frac{2}{a}) ^{6}=(\frac{2}{a}) ^{2x-1}$ We KNOW, $\tt\purple{a^{m} \times a^{n} = a^{m+n}}$ $\sf↦\:(\frac{2}{a})^{3+6}=(\frac{2}{a}) ^{2x-1}$ $\sf↦\:(\frac{2}{a})^{9}=(\frac{2}{a}) ^{2x-1}$ $\sf↦\:9=2x-1$ $\sf\:oR \:2x-1=9$ $\sf ↦\:2x=9+1$ $\sf↦\:2x=9+1$ $\sf↦\:2x=10$ $\sf↦\:x=\frac{10}{2}$ $\tt\pink{↦\:x=5}$ THNKU :)

Answer»

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