Question

Please help me to do this sum.​

Answer 1

Answer:

$8 \times 3}^{4x + 3} = 3}^{11} - 3}^{13} \\ = 3}^{11} (1 - 9) \\ = 3 }^{11} \times 8 \\ compare the \: power \: of \: x \: both \: side \: and \: get \: x = 2$