Himpunan penyelesaian dari 1/3 (x + 3) = 1/4 (3x – 1) adalah… a.{3}. b. {2}. c. {1}. d. {0}

Kpk 3&4 = 12
[1/3(x+3)=1/4(3x-1)]12
4x+12=9x-3
4x-9x=-3-12
-5x=-15
x=3
x={3}

1/3x + 1 = 1/4x – 1/4
1/3x -1/4x = -1/4 -1
4x – 3x = – 3 – 1
x = -4