+128474 I think this might be
(127)^(4 - x) = 9^(2x -1) take the log of both sides
log (127)^(4 -x) = log (9)^(2x -1) and we can write
(4 - x) log (127) = ( 2x - 1) log (9)
4log (127) - x log (127) = 2xlog (9) -log (9) rearrange as
4log (127) + log (9) = x [ log (127) + 2 log (9) ]
x = [ 4log (127) + log(9) ] / [ log (127) + 2log (9) ] ≈ 2.335
