Question

calcule o valor de x
a)2x+5<-30
b)3x+12>x-8

Answer 1

a)
$2x < - 30 - 5 \\ 2x < - 35 \\ x < \frac{ - 35}{2}$
b)
$3x + 12 > x - 8 \\ 3 x - x > - 8 - 12 \\ 2x > - 20 \\ x > \frac{ - 20}{2} \\ x > - 10$

Answer 2

Olá, bom dia ☺

Resoluções.

a)

2x + 5 < -30

2x < -30 - 5

2x < -35

x < -35/2

b)

3x+12>x-8

3x - x > -8 - 12

2x > -20

x > -20/2

x > -10

Bons estudos :)