Question

7) Resolva as inequações abaixo;
a) 6x - 4x >- 18 + 38
b) 2x + 22 < x + 6
c) 4 - 3x >- 6x + 6
d) 4x - 15 <-2x
e) 5x * 4 > 14
f) 3x - 2 <4​

Answer 1

a) 6x - 4x > -18 + 38

2x > 20

x > 20/2

x > 10

b) 2x + 22 < x + 6

2x - x < 6 - 22

x < -16

c) 4 - 3x > -6x + 6

-3x + 6x > 6 - 4

3x > 2

x > 2/3 = 0,6

d) 4x - 15 < -2x

4x + 2x < 15

6x < 15

x < 15/6

x < 5/2 = 2,5

e) 5x . 4 > 14

20x > 14

x = 14/20

x = 7/10 = 0,7

f) 3x - 2 < 4

3x < 4 + 2

3x < 6

x < 6/3

x < 2