Question

Himpunan penyelesaian dari pertidak samaan 1 - 2x /3 < 3. x E R

Answer 1

(1 - 2x)/3 < 3
(1 - 2x)/3 - 9/3 < 0
(1 - 2x - 9)/3 < 0
(-8 - 2x)/3 < 0
- 8 - 2x < 0
2x > - 8
x > - 4

Answer 2

(1 - 2x)/3 < 3
= (1 - 2x)/3 - 9/3 < 0
= (1 - 2x - 9)/3 < 0
= (-8 - 2x)/3 < 0
= - 8 - 2x < 0
= 2x > - 8
= x > - 4