f(x) = 4x - 5
f(3a + 2) = 4 ( 3a + 2 ) - 5
f(3a + 2) = 12a + 8 - 5
f(3a + 2) = 12a + 3
f(3a + 2) = 4(3a + 2) - 5
= 4(3)a + 4(2) - 5
= 12a + 8 - 5
= 12a + 3
Jadi, hasil dari f(3a + 2) adalah 12a + 3
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f(x) = 4x - 5
f(3a + 2) = 4 ( 3a + 2 ) - 5
f(3a + 2) = 12a + 8 - 5
f(3a + 2) = 12a + 3
f(x) = 4x - 5
f(3a + 2) = 4(3a + 2) - 5
= 4(3)a + 4(2) - 5
= 12a + 8 - 5
= 12a + 3
Jadi, hasil dari f(3a + 2) adalah 12a + 3