Solve the logarithmic equation. 26) log (x+9)=1-log x 27) logg (x-5)+ log9 (x = 5) = 1 28) log (4+x) log (x-3)= log 4 29) log6(9x-4)=2 30) log (x+10) log (x + 4) = log x 31) log5(x+6)+ log5(x-6)=1