Question

find the value of x when​

Answer 1

question in not clear can you please take a pic again

Answer 2

$heya \\ \\ \\ \\ we \: know \: that \: 1 \div x {}^{n} = x {}^{ - n} \\ \\ \\ \\ \\ \\ \\ = > \\ \\ (3 \div 7) {}^{8x - 16} = (3 \div 7) {}^{ x + 5} \: \: \: \: \times (3 \div 7) {}^{2x + 6} \\ \\ \\ \\ = > \\ \\ \\ \\ (3 \div 7) {}^{8x + 16} = (3 \div 7) {}^{3x + 11} \\ \\ \\ compare \: powers \: of \: 3 \div 7 \\ \\ \\ \\ \\ 8x + 16 = 3x + 11 \\ \\ \\ \\ 5x = - 5 \\ \\ \\ x = - 1$