Question

find value of p:
please solve

Answer 1

${3}^{3p} \times {3}^{4} \times \frac{1}{ {243}^{5} } = 1 \\ \\ {3}^{3p } \times {3}^{4} = {243}^{5} \\ {3}^{3p} \times {3}^{4} = ({3}^{5})^{5 } \\ {3}^{3p + 4} = {3}^{25} \\ now \\ 3p + 4 = 25 \\ 3p = 21 \\ p = 7$