Question

me ajudem
a)8x-10>2x+2
b)2(3x-7)<-4x+6
c)20-(4x+5)<11+8x
d)2x+7<-3x+37
e)6(x-5)-2(4x+2)>10​

Answer 1

Resposta:

a) 8x - 10 > 2x + 2

8x - 2x > 2 + 10

6x > 12

x > 12/6

x > 2

b) 2(3x - 7) < -4x + 6

6x - 14 < -4x + 6

6x + 4x < 6 + 14

10x < 20

x < 20/10

x < 2

c) 20 - (4x + 5) < 11 + 8x

20 - 4x - 5 < 11 + 8x

-4x - 8x < 11 - 20 + 5

-12x < -4

12x > 4

x > 4/12

x > 1/3

d) 2x + 7 < -3x + 37

2x + 3x < 37 - 7

5x < 30

x < 30/5

x < 6

e) 6(x - 5) - 2(4x + 2) > 10

6x - 30 - 8x - 4 > 10

6x - 8x > 10 + 30 + 4

-2x > 44

2x < -44

x < -44/2

x < -22

Answer 2

Explicação passo-a-passo:

a)

8x-10>2x+2

8x-2x>2+10

6x>12

x>12/6

x>2

b)

2(3x-7)<-4x+6

6x-14<-4x+6

6x+4x<6+14

10x<20

x<20/10

x<2

c)

20-(4x+5)<11+8x

20-4x-5<11+8x

-4x-8x<11+5-20

-12x<16-20

-12x<-4 .(-1)

12x>4

x>4/12

x>(4÷4)/(12÷4)

x>1/3

d)2x+7<-3x+37

2x+3x<37-7

5x<30

x<30/5

x<6

e)

6(x-5)-2(4x+2)>10

6x-30-8x-4>10

6x-8x-30-4>10

-2x-34>10

-2x>10+34

-2x>44 .(-1)

2x<-44

x<-44/2

x<-22