f(3x+2)=5x+3
misal
3x+2=a
x=(a-2)/3
f(a)=5(a-2)/3+3=(5a-10+9)/3=(5a-1)/3
f(x)=(5x-1)/3
f(-4)=(5(-4)-1)/3=(-20-1)/3=-21/3=-7
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f(3x+2)=5x+3
misal
3x+2=a
x=(a-2)/3
f(a)=5(a-2)/3+3=(5a-10+9)/3=(5a-1)/3
f(x)=(5x-1)/3
f(-4)=(5(-4)-1)/3=(-20-1)/3=-21/3=-7