1) log5$1/7$ - log√5$26/\surd 7$ Using the properties of logarithms, we can simplify this expression:
= log5$1/7\ast \surd 7/26$ = log5$\surd 7/182$

2) 8^$log4(3)-1$ = 8^log4$3$ / 8
= 4^log4$3$ = 3