Question

Rozwiąż równania : a) 4x-3+3x+5 b) 5x+2=7-3x c) 3(x-1)=0 d)-6(x+1)=24 e)-7(x-2)=3x-1 f)4(x-1)6(1=x)

Answer 1

a) 4x - 3x = 3+5

x = 8

b) 5x + 3x = -2 + 7

8x = 5  / :8

x = 0,625

c) 3x - 3 = 0

3x = 3 + 0

3x = 3  / :3

x = 1

d) -6x - 5 = 24

-6x = 24 + 5

-6x = 29  / :6

x = 4,8(3)

e) -7 + 9 = 3x - 1

-7x + 3x = -1 +9

-4x = 8  / :4

x = 2

f) 4x - 4 = 6 - 6x

4x + 6x = 4 + 6

10x + 8  / :10

x = 1.25

 

 

 

;)

Answer 2

 a)

4x-3 = 3x+5

 4x - 3x = 5 + 3

x = 8 

 

b)

5x+2=7-3x

5x + 3x = 7 - 2

8x = 5  -- / : 8

x = 5/8

 

c)

3(x-1)=0

3x - 3 = 0

3x = 3

x = 1

 

d)

-6(x+1)=24  -- / : (-6)

x + 1 = -4 

x = -4 - 1

x = -5

 

e)

-7(x-2)=3x-1

 -7x + 14 = 3x  -1

-7x - 3x = -1 - 14

-10x = -15

x = -15 : (-10)

x = 1,5

 

f)

4(x-1)= 6(1+x)

4x - 4 = 6 + 6x

4x - 6x = 6 + 4

-2x = 10

x = 10 : (-2)

x = -5