Question

Calcule o valor de x da equação exponencial:​

Answer 1

$16^{4-3x}=128^{2x+6}\\\\(2^4)^{4-3x}=(2^7)^{2x+6}\\\\2^{4(4-3x)}=2^{7(2x+6)}\\\\2^{16-12x}=2^{14x+42}\\\\2^{16-12x}=2^{14x+42}\\\\16-12x=14x+42\\16-42=14x+12\\-26=26x\\\\\displaystyle x = \frac{-26}{26}\\\\x = -1$