Question

3 (1-2x) < 2 (x + 1) + x - 7 

Answer 1

3 (1-2x) < 2 (x + 1) + x - 7 
3 -6x < 2x +2 +x -7
-6x -2x -x < 2 -7 -3
-9x < -8 .(-1)
+9x > +8
x > 8/9

Answer 2

Resposta:

3(1 - 2x) < 2(x + 1) + x - 7

3 - 6x < 2x + 2 + x - 7

3 - 6x < 3x - 5

- 6x - 3x < - 5 - 3

- 9x < - 8

x > - 8/-9

x > 8/9

S {x ∈ IR | x > 8/9}