Question

How do you solve this question? need help asap

Answer 1

$\log_a(x) +\log_a(y) =\log_a(x\times y) \\ \\ \log(5)+\log(x)=\log(40) \\ \log(5 \times x)=\log(40) \\ 5x=40 \\ x= \frac{40}{5} \\ x=8$