Jika f (3x+2)=6x+10 . Hitunglah nilai f(-5)

f(-5) → 3x+2 = -5
3x+2 = -5
x = -7/3

f(-5) = 6(-7/3) + 10
f(-5) = -14 + 10
f(-5) = -4

f (3x+2)=6x+10

f( -5) = ?

cara cepatnya
3x + 2 = -5
3x = -5 -2
3x = -7
x = -7/3

tinggal masukan x = -7/3 ke f (3x+2)=6x+10

f( 3.( -7/3) + 2) = 6.(-7/3) + 10
f(-5)= -14 + 10
= -4

semoga mmbantu