Question

Resolva as seguintes inequações:
A) 2x + 1 < x - 4

Answer 1

Resposta:

a) 2x+1< x-4

2x-x<-4-1

x<-5

--------------------

b) 3x-4≥3-x

3x+x≥+4+3

4x≥7

x≥7/4

-------------------

c) 4(x-2)+3(4-2x)≤x-5(x+1)

4x-8+12-6x≤x-5x-5

-2x+4≤-4x-5

-2x+4x≤-5-4

2x≤-9

x≤-9/2

----------------------

d) 1/3(x/2-3)+1/6 +3≥0

1/3(x-6/2)+1/6+3≥0

x-6/6+1/6+3≥0

x-5/6+3≥0

x-5+18≥0

x+13≥0

x≥-13