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Verified answer
Jawab7²ˣ⁻⁴ = 5
log (7²ˣ⁻⁴) = log 5
(2x - 4) log 7 = log 5
(2x - 4) = log 5/log 7
2x - 4 = ⁷log 5
2x = ⁷log 5 + 4
2x = ⁷log 5 + ⁷log 7⁴
2x = ⁷log 5 (7⁴)
2x = ⁷log 12.005
x = ⁷log √12.005