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2 - ax/2 = 2 - (a-3)x
2 - ax/2 = 2 -ax + 3x kalikan 2
4 - ax = 4 - 2ax + 6x
-ax + 2ax = 6x
ax = 6x
a = 6
A) nilai a = 6
B) bentuk fungsi f(x) = 2 - ax/2
= 2 - 6x/2
= 2 - 3x
bentuk fungsi g(x) = 2 - (a-3)x
= 2 - (6-3)x
= 2 - 3x
C) bentuk fungsi f(x) + g(x) = 2-3x + 2-3x
= 4 - 6x
D) f(-1) = 2 - 3x
= 2 -3(-1)
= 2 +3
= 5
f(2) = 2 - 3x
= 2 -3(2)
= 2 - 6
= -4
g(1) = 2 - 3x
= 2 - 3(1)
= 2 - 3
= -1
g(4) = 2 - 3x
= 2 - 3(4)
= 2 - 12
= -10