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Verified answer
F(x) = 2x - 5f(k) = 2k - 5
-15 = 2k - 5
- 10 = 2k
k = -5
#maaf jika salah, semoga membantu ^^
Verified answer
F(k)=2k-5=-15=2k=-15+5
=2k=-10
=k =-10/2
=k =-5