jika f(x)=3x-8 dan f(2n+5)=19, maka nilai n=

f(x) = 3x - 8
f(2n+5) = 3×(2n+5) - 8
f(2n+5) = 6n + 15 - 8
f(2n+5) = 6n + 7

f(2n+5) = 19
6n + 7 = 19
6n = 19-7
6n = 12
n = 12/6
n = 2

smga mmbantu

jika f(x) = 3x - 8
beraa f(2n+5) = 19?

19 = 3(2n+5) - 8
19 = 6n + 15 - 8
6n = 19 - 15 + 8
6n = 12
n = 12/6
n = 2