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= 8/4 = 2
b. f(-3) = 8/5-(-3)
= 8/8 = 1
c.f(7)= 8/5-7
= 8/-2 = -4
d. Nilai x = .
= 8/5-x = 2 kali silang
10-2x =8
-2x = 8-10
x= -2/-2 = 1
e. Nilai a :
= 8/5-a = 0,5 kali silang
= 25 -5a = 80
-5a = 80-25
-a = 55/5 = 11
a= -11