Question

Nilai 2 - X dari penyelesaian 1/4x + 5 = 1/3 (2x-5) adalah ??

A. -18 C.14
B. -14 D.18

Answer 1

1/4 x + 5 = 1/3 ( 2x - 5)  ---biar ilang pecahannya di kali 12

3x + 60 = 4 ( 2x - 5)
3x + 60 = 8x - 20
3x - 8x = -20 - 60
- 5 x = - 80
   x = 16

2- x = 2 - 16 = - 14 (B)

Answer 2

1/4x + 5 = 1/3 (2x - 5)
5/4x + 5 = 2/3x - 5/3
5/4x - 2/3x = -5/3 - 5/1
3/12x - 8/12x = -5/3 - 15/3
-5/12x = -20/3
x = -20/3 × -12/5
x = 240/15
x = 16

2 - x = 2 - 16 = -14 (B)