Question

rozwiąż nierówności:

8m-4(1+m)=m
-3x+8<-5+14x

3x-8(1-x)≥5x-4

Answer 1

8m-4(1+m)=m

8m - 4 -4m =m

4m-m=4

3m=4 /:3

m = 4/3

 

-3x+8<-5+14x

-3x-14x < -5-8

-17x<-13 /:(-17)

x> 13/17

 

3x-8(1-x)≥5x-4

3x-8+8x≥5x-4

11x-5x≥-4+8

6x≥4 /:6

x≥2/3

Answer 2

1.

8m-4(1+m)=m

8m-4-4m=m

4m-4=m

-4=-3m /:(-3)

 

2.

-3x+8<-5+14x

13<17x /:17

x>13/17

 

3.

3x-8(1-x)≥5x-4

3x-8+8x≥5x-4

11x-4≥5x

-4≥-6x /:(-6)

x≥4/6

x≥2/3

Answer 3

8m-4(1+m)=m

8m - 4 - 4m = m

4m - 4 =m

- 4= - 3m

4= 3m

1 1/3= m

-3x+8<-5+14x

8 < -5 + 17x

13 < 17x

13/17 < x

3x-8(1-x)≥5x-4

3x - 8 + 8x ≥ 5x - 4

6x - 8 ≥ - 4

6x ≥ 4

x ≥ 2/3