Question

7(x - 3) > 9(x + 1) – 38

Answer 1

Resolver.

7(x - 3) > 9(x + 1) - 38
7x - 21 > 9x + 9 - 38
7x - 21 >  9x - 29
- 21 + 29 > 9x - 7x
 8 > 2x
8/2 > x
4 > x
x < 4
xxxxxxxxxxxxxxxxxxxxxxxxxxxx)
<---------------------------------------------¡------------------------------------->
                                                       4

Solución.
x∈ (- infinito , 4)

Answer 2

7(x - 3) > 9(x + 1) – 38

7x - 21 > 9x + 9 - 38

7x - 21 > 9x - 29

-21+29 > 9x - 7x

8 > 2x

$\frac{8}{2} \ \textgreater \ x$

4 > x       por (-1)

-4 < -x

x < 4

CS = < -∞; +4]