Question

Resolva os sistemas de inequações

A){4x+4 < igual a 0
x+1 < igual a 0

B){x-3> 5 (x+8)
3x-6> igual 12 (x+6)

Answer 1

Olá,

Vamos lá,

A)4x+4 < igual a 0
4x + 4 $\leq$ 0
4x $\leq$ - 4
x $\leq$ - 4/4
x $\leq$ -1

x+1 < igual a 0
x $\leq$ -1

B){x-3> 5 (x+8)
x - 3 > 5x + 40
x - 5x > 40 + 3
-4x > 43   *(-1)
4x < 43
x < 43/4

3x-6> igual 12 (x+6)
3x - 6 $\geq$ 12x + 72
3x - 12x $\geq$ 72 + 6
-9x $\geq$ 78   *(-1)
9x $\leq$ -78
x $\leq$ -78/9
x $\leq$ - 8,66