Question

2

log
7
(
4
)
+
log
7
(
40
)
=
x

Answer 1

3.32054 or log 7(640)

Explanation:

That would be 2log7(4)+log7(40)=x, which would be log7(16*40)=x, which is log 7(640) = x, which means that x is approx. 3.32054