Question

What is the solution of
6
(
13
4
x
)
=
21
, rounded to the nearest hundredth?

Answer 1

Interpreting the equation as 6*(13/4)^x = 21:

(13/4)^x = 21/6 = 7/2

x = ln(7/2) / ln(13/4) ≈ 1.062875...

Rounded to the nearest hundredth: x ≈ 1.06

If you meant a different arrangement (for example 6·13·4^x = 21), tell me and I’ll redo it.