hitunglah tanpa kalkulator setiap bentuk berikut b. log 27 + log 14 - log 9 -log 7 - log 6

log a + log b = log (a × b)
log a - log b = log (a : b)

log 27 + log 14 - log 9 - log 7 - log 6
= log (27 × 14 : 9 : 7 : 6)
= log ( (27 : 9) × (14 : 7) : 6)
= log ( 3 × 2 : 6)
= log 1
= 0