Question

Rozwiąż równania:

a) |3x| = 18

b) |4x| = 6

c) |2/3x| = 1,4

d) |2x - 6| = 4

e) |4x + 8| = 2

f) |1/3x + 1/6| = 1/2

g) |4 - 2x| = 7

h) |2x - 4| + |3x - 6| = 10

i) |4x - 8| + |2 - x| = 5

Answer 1

a) 3x = 18

 

x = 

x = 6

 

b) 4x = 6

 

x = 

x = 0,5

 

c)  = 

 

x =  * 

x = 2,1

 

d) 2x - 6 = 4

2x = 6 + 4

2x = 10

x = 

x = 5

 

e) 4x + 8 = 2

4x = 2 - 8

4x = -6

 

x = 

x = - 0,5

 

f) 1/3x + 1/6= 1/2

 

+  = 

 

+  = 

 

= 

 

x = 1

 

g) 4 - 2x = 7

2x = 7 +4

2x = 11

 

x = 

x = 5,5

 

h) |2x - 4| + |3x - 6| = 10

2x + 3x - 10 = 10

5x = 10 + 10

5x = 20

x = 4

 

i) |4x - 8| + |2 - x| = 5

4x -  8 + 2 - x = 5

4x - x + 2 - 8 = 5

3x = 5 + 6

3x = 11

 

x =