Question

resolva as inequações a) 13×-6<8×+4 b) 9-8×>3-5× c) 5×+19<3×-5 d) 12×+15>15×-45​

Answer 1

Resposta:

a) 13x-6<8x+4

13x-8x<4+6

5x<10

x<10/5

x<2

b)

9-8x>3-5x

-8x+5x>3-9

-3x>-6 (-1)

3x < 6

x < 6/3

x < 2

c)

5x+19<3x-5

5x-3x<-5-19

2x<-24

x<-24/2

x < -12

d)

12x+15>15x-45

12x-15x>-45-15

-3x>-60 (-1)

3x < 60

x < 60/3

x < 20