rozwiąż równania a) 1/2x-4=x-6 b) x-5=1/3x+1 c/0 x/4-1/4=2 d) x/5-3=x+1/5 e) 5/6 (x-1)=4 f)-1/2(-x-6)=-x
PLS DAJE NAJJJ


Odpowiedź :

Odpowiedź:

a)

1/2x-4=x-6 / *2

x - 8 = 2x - 12

x- 2x = -12 +8

-x = -4 / *(-1)

x=4

b)

x-5=1/3x+1 / *3

3x - 15 = x + 3

3x - x = 3 +15

2x = 18 /:2

x = 9

c)

x/4 - 1/4=2 /*4

x - 1 = 8

x = 8 +1

x=8

d)

x/5-3=x+1/5 / *5

x - 15 = 5x + 1

x- 5x = 1 +15

-4x = 16 / :(-4)

x = - 4

e)

5/6(x-1)=4 / * 6

5(x-1) = 24

5x - 5 = 24

5x = 24 +5

5x= 29 /:5

x= 29/5

x = 5 i 4/5

f)

-1/2(-x-6)= -x / *2

-( -x - 6 ) = -2x

x + 6 = - 2x

x + 2x = -6

3x= -6 / : 3

x= -2

Szczegółowe wyjaśnienie:

Odpowiedź:

a) 1/2x-4=x-6  /+4

1/2x = x-2  /-x

-1/2x = -2 /*(-2)

x = 4

b) x-5=1/3x+1  /+5

x = 1/3x + 6  /*3

3x = x + 18  /-x

2x = 18  /:2

x = 9

c) x/4 - 1/4 = 2  /*4

x - 1 = 8  /+1

x = 9

d) x/5 - 3 = x + 1/5  /*5

x - 15 = 5x+ 1  /-x

-15 = 4x + 1  /-1

-16 = 4x  /:4

x = -4

e) 5/6 * (x-1) = 4  

5/6x -5/6 = 4  /*6

5x - 5 = 24  /+5

5x = 29  /:5

x = 29/5

x = 5,8

f) -1/2 * (-x-6) = -x

1/2x + 3 = -x  /*2

x + 6 = -2x  /-x

6 = -3x  /*(-1)

-6 = 3x  /:3

x = -2