Question

preciso entregar até às 18:00 me ajudem

encontre a solução das inequacoes
a) 2x-2< X

b) 6x+12_> 4-10x

c) 8-5x_< 7x +5


​

Answer 1

a) 2x - 2 < x

2x - x < 2

x < 2

S = {x < 2}

b) 6x + 12 > 4 - 10x

6x + 10x > 4 - 12

16x > - 8

x > - 8 (÷8)

----

16 (÷8)

x > - 1

---

2

S = {x > -1/2}

c) 8 - 5x < 7x + 5

- 5x - 7x < 5 - 8

- 12x < - 3 . (-1)

12x > 3

x > 3 (÷3)

---

12 (÷3)

x > 1

---

4

S = {x > 1/4}