Dik f (x) = 5-3x. Jika f(2b-1) nilai b yang memenuhi adalah.. A. -2 B.-1 C.1 D. 2

Langsung aja y

f(x) = 5 - 3x
f(2b-1) = 5 - 3(2b-1)
f(2b-1) = 5 - 6b + 3
f(2b-1) = 8 - 6b

jika f(2b-1) = 2

maka
f(2b-1) = 8 - 6b
2 = 8 - 6b
6b = 8 - 2
b = 6 : 6
b = 1

jawabannya C

semoga berguna +_+