Jika fungsi f(x) = 2x -1 / x + 3 bila f(x) = - 3 tentukan nilai x tolong dijwb secepat mungkin ya terima kasih

Question

Matematika Diposting : 2014-11-05 Diupdate : 2021-08-17 ReyzaFadlyMaghfiroh

Pertanyaan

Jika fungsi f(x) = 2x -1 / x + 3
bila f(x) = - 3 tentukan nilai x
tolong dijwb secepat mungkin ya terima kasih

Answer 1

f(x)=2x-1 / x+3
-3 =2x-1 / x+3
-3(x+3) = 2x-1
-3x-9 = 2x-1
-3x - 2x = -1+9
-5x = 8
x = -8/5

Answer 2

-3 = 2x-1 / x+3
-3(x+3) = 2x-1
-3x-9 = 2x-1
-3x - 2x = -1+9
-5x = 8
x = -8/5
x = -1,6