Tolong dijawab plisss

a. Masukin dulu g(-2) = 3(-2) + 6 = -6 + 6 = 0
trus f(g(-2) = f(0) = 2(0) - 5 = -5

b. Masukin dulu f(5) = 2(5) - 5 = 10 - 5 = 5
trus g(f(5)) = g(5) = 3(5) + 6 = 21

c. f(x+6) = 2(x+6) - 5 = 2x + 12 - 5 = 2x + 7
g(-4x + 5) = 3(-4x + 5) + 6 = -12x + 15 + 6 = -12x + 21
jika 2x+ 7 = -12x + 21
14x = 14
x = 1

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