Question

zadanie klasa 6 matematyka strona 200 zadanie 6 podpunkt c d e f

x+3

------ razy 8 = x - 3 /

2

4 (2x- trzy czwarte) = 53 /

2(x+7) =3 (2x-5) /

3(x-5) +7= x+1/

DAJE NAJ

Answer 1

x+3

------ * 8 = x - 3 

   2

4(x+3)=x-3

4x + 12 = x - 3

4x - x = -3 - 12

3x = -15

x = -5

 

4 (2x- 3/4) = 53 

8x - 3 = 53

8x = 53 + 3 

8x = 56

x = 7

 

 

2(x+7) =3 (2x-5) 

2x + 14 = 6x - 15

2x - 6x = -15 - 14

-4x = -29

x= 7,25

 

 

3(x-5) +7= x+1

3x - 15 + 7 = x + 1

3x - 8 = x + 1

3x - x = 1 + 8

2x = 9 

x = 4,5

Answer 2

c)

4(x+3)=x-3

4x+12=x-3

4x-x=-3-12

3x=-15

x=-5

 

d)

8x-3=53

8x=53+3

8x=56

x= 7

 

e)

2x+14=6x-15

2x-6x=-15-14

-4x=-29

x=29/4

x=7¼

 

f)

3x-15+7=x+1

3x-8=x+1

3x-x=1+8

2x=9

x=9/2

x=4½ 

 

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