Question

1. Resolva as inequaçoes do 1 grau
a)2X + 3 > 13

b)3X - 2 < 22

c)8X - 1 > 71

d)10X + 5 < 95

a)X - 15 > 35

b)X + 21 < 48

c)X + 30 > 50​

Answer 1

a)2X + 3 > 13

2x > 13 - 3

2x > 10

x> 10/2

x> 5

b)3X - 2 < 22

3x < 22 + 2

3x < 24

x<24/3

x< 8

c)8X - 1 > 71

8x >71 + 1

8x > 72

x > 72/8

x > 9

d)10X + 5 < 95

10x < 95 - 5

10x < 90

x < 90/10

x < 9

a)X - 15 > 35

x > 35 + 15

x > 50

b)X + 21 < 48

x < 48 - 21

x < 27

c)X + 30 > 50

x > 50 - 30

x> 20