1. tntukan nilai X dari persamaan berikut ! a 3x-9=4x+5 b 2(3x+4)=6-(2x+5) c 2(x-3)/5=x-3/5

a 3x - 9 = 4x+5
3x - 4x = 5 + 9
-x = 14
x = -14

b.) 2(3x+4)=6-(2x+5)
6x + 8 = 6 - 2x - 5
6x + 2x = 6 - 5 - 8
8x = -7
x = -7/8

c 2(x-3)/5=x-3/5
2x-6/ 5 = x-3/5
(2x-6)×5 = (x-3)5
10x - 30 = 5x -15
10x - 5x = -15 + 30
5x = 15
x = 3