2)
(Loq₇ 14 -(1/3)*Log₇ 56 ) / (Log₆ 30 -(1/2)* Log₆ 150 ) =
( Loq₇ 2+Loq₇ 7 -(1/3)*(Log₇ 7 + Log₇ 2³ ) )/
(Log₆ 6+Log₆ 5 -(1/2)*( Log₆ 6 + Log₆ 5² ) ) =
( Loq₇ 2+1 -1/3 - Log₇ 2 ) / (1+ Log₆ 5 -1/2 - Log₆ 5 ) = (2/3) /(1/2) = 4/3 .
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4)
(3Log₇ 2 -(1/2)*Log₇ 64) / (4Log₅ 2 +(1/3)*Log₅ 27) =
(3Log₇ 2 -(1/2)*Log₇ 2⁶) / (4Log₅ 2 +(1/3)*Log₅ 3³) =
(3Log₇ 2 -(1/2)*6Log₇ 2 ) / (4Log₅ 2 +(1/3)*3Log₅ 3) =0 /5Log₅ 2 =0.