27 pangkat 3Ã-4=9pangkatÃ+1

Bab Eksponensial
Matematika SMP Kelas IX

27³ᵃ⁻⁴ = 9ᵃ⁺¹
(3³)³ᵃ⁻⁴ = (3²)ᵃ⁺¹
3(3a - 4) = 2(a + 1)
9a - 12 = 2a + 2
9a - 2a = 2 + 12
7a = 14
a = 14/7
a = 2

HP = { 2 }