Question

Resolva as inequações

a) 2x-15<-x

b)-x-10>-2

c)2x+x-5>19+5x

d)4-3x>x+6

e)3x+8<6+5x

f)3x+4>7-3-1

g)5x-15<2x+3+5

Answer 1

a) 2x-15<-x

2x+x<15

3x<15

x<15/3

x<5

b)-x-10>-2

-x>-2+10

-x>8.(-1)

x<-8

c)2x+x-5>19+5x

3x-5>19+5x

3x-5x>19+5

-2x>24.(-1)

2x<-24

x<-24/2

x<-12

d)4-3x>x+6

-3x-x>6-4

-4x>2.(-1)

4x<-2

x<-1/2

e)3x+8<6+5x

3x-5x<6-8

-2x<-2.(-1)

2x>2

x>2/2

x>1

f)3x+4>7-3-1

3x+4>4-1

3x+4>3

3x>3-4

3x>-1

x>-1/3

g)5x-15<2x+3+5

5x-2x<3+5+15

3x<8+15

3x<23

x<23/3

Espero ter ajudado!