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maka
f(1)
= 8 / 5-1
= 8 / 4
= 2
f(-3)
= 8 / 5 - (-3)
= 8 / 5+3
= 8/8
= 1
f(7)
= 8 / 5-7
= 8 / -2
= -4
f(x) = 2
maka
8 / 5-x = 2
8 = 2 (5-x)
8/2 = 5 - x
4 = 5 - x
x = 5 - 4
x = 1
f(a) = 0,5
maka
8 / 5-a = 0,5
8 / 0,5 = 5 -a
16 = 5 - a
a = 5 - 16
a = -11
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