Question

me ajudem por favor agradeço mt ,esse dever é para amanha

Answer 1

a)MMC(2,3)=6
3.5x -2.1> ou igual 6x
15x-2>ou igual 6x
15x-6x>ou igual 2
9x>ou igual 2
x> ou igual 2/9
s={xer/x>ou igual 2/9}

b)MMC(5,2,10)=10
2.4x-5.1>1.x+2.3
8x-5>x+6
8x-x>6+5
7x>11
x>11/7
s={xer/x>11/7}

d)MMC(4,3)=12
12.2-3.(x-2)> 12.3+4.(x-3)
24-3x+6>36+4x-12
3x-4x>36-30-12
-x>-6. (-1)
x <6

s={xer/x<6}

c)MMC(3,2)=6

6.8-3.(7x)>6.5+2.x
48-21x>30+2x
-21x-2x>30-48
-23x>-18 (-1)
23x<18
x<18/23

s={xer/x<18/23}

e)MMC(4,3,2)=12
3.(x-7)+4.1>6.(x-1)
3x-21+4>6x-6
3x-6x>-6+21-4
-3x>11 (-1)
3x<-11
x<-11/3
s={xer/x<-11/3}

f)MMC(10,5)=10
2x-1-2.(3x-2)>ou igual 2.1
2x-1-6x+4>ou igual 2
-4x+3> ou igual 2
-4x>ou igual -3+2
-4x>ou igual -1 (-1)
4x< ou igual 1
xs={xer/x