Question

Resolva a equação: log2(x + 5) + log212 = 3.

Answer 1

$log_2(x+5)+log_212=3\\ \\ log_2(12x+60)=3\\ \\ 12x+60=2^3\\ \\ 12x+60=8\\ \\ 12x=8-60\\ \\ 12x=-52\\ \\ x=\frac{52}{12}$