Question

resolva as seguintes inequações
a)2x+3<3
b)5x-3 c)2x-4>5x+8

Answer 1

a) 2x+3<3
2x<0
x<0

b)
5x-x< 3+13

4x <16

x<4

c)

2x-4>5x+8

-4-8 > 5x-2x

-12 > 3x

x<-4

Answer 2

b)Boa noite

veja:

a)

2x + 3 < 3

2x < 3 - 3

2x < 0

x < 0 / 2

x < 0

b)

5x - 3 < x + 13

5x - x < 13 + 3

4x < 16

x < 16 / 4

x < 4

c)

2x - 4 > 5x + 8

- 4 - 8 > 5x - 2x 

- 12 > 3x

x < - 12 / 3

x < - 4