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11=2k+7
11-7=2k
4=2k
2=k
Jadikan yg terbaik ya :)
f(k) = 2(k) +7 = 11
= 2k +7 = 11
= 2k = 11 -7
= 2k = 4
= k = 4/2
= k = 2
Jadi, nilai k adalah 2.