Fungsi f(x) =3x+10 F(-1)=a F(b)=-2 Nilai a+b=

f(-1) = a
3(-1) + 10 = a
7 = a
f(b) = -2
3(b) + 10 = -2
b = -2 - 10 / 3
= -12/3
= -4
a + b = 7 + (-4)
= 3

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