Question

Rozwiąż równania:

8x=1/4

x-8=1/4x

x+8=1/2x

x-8=4x

2x-5=x+7

3(2x+1)=2(x-2)

Proszę szybko.Daję naj.

Answer 1

a)

8x=1/4   /:8

x =  1/32

 

b)

x-8=1/4x    /*4

4x - 32 = x 

3x = 32    /:3

x = 32/3

 

c)
x+8=1/2x     /*2

2x + 16 = x

x = -16

 

 

d)
x-8=4x
-3x = 8     /:(-3)

x = -8/3

 

e)
2x-5=x+7
x = 12

 

f)
3(2x+1)=2(x-2) 

6x + 3 = 2x - 4

4x = -7     /:4

x =  - 1,75

 

 

 

 

Answer 2

8x=1/4 / x4

24x=1/ :24

x=1/24

 

x-8=1/4x

x-1/4x=8

3/4x=8 / :3/4

x=10i 2/3

 

x+8=4x

-3x=-8 / -3

x=2i 2/3

 

2x-5=x+7

2x-x=7+5

x=12

 

3(2x +1) = 2(x-2)

6x + 3 = 2x-2

6x-2x=-2-3

4x=-5/ :4

x=-1i 1/5

 

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