Solve: round to the thousandths if necessary!
1) 4^3/4x+5 = 12
2) log(x-1) + log x = log 6
3) 2log(base 4) 5 - log(base 4) x + log(base 4) 3 - log(base 4) 7 = 1/2
#1 ambiguous
#2 log(x(x-1)) = log 6
x(x-1) = 6
x = 3
#3 assuming base 4 throughout,
log25-logx+log3-log7 = 1/2
log(75/7x) = 1/2
75/7x = 4^(1/2) = 2
14x = 75
x = 75/14
Unusual answer. I suspect a typo.