Question

Oblicz x:

a) 3x=4/9

b) 2x=1 i 1/3

c) 1/5x=2 i 3/4

d) 2/3x=2 i 1/7

1/5 itp. to ułamki

2 i 1/7 to liczby całkowite z ułamkami :)

Proszę.

Answer 1

a) 3x=4/9

x=4/9: 3=4/9*1/3

x=4/27

b) 2x=1 i 1/3

x= 1 i 1/3 : 2

x= 4/3*1/2

x=2/3

c)1/5x=2 i 3/4

x=11/4*5/1

x=55/4

x=13,75

d) 2/3x=2 i 1/7

x=2 i1/7 : 2/3

x= 15/7*3/2

x=11,25

Answer 2

a) 3x = 4/9

    x = 4/9 :3

    x = 4/9 * 1/3 

    x = 4/27

 

b) 2x = 1i1/3

    2x = 4/3   /:2

    x = 4/3 * 1/2

    x = 4/6 = 2/3

 

c) 1/5x = 2i3/4

    1/5x = 11/4

       x = 11/4 * 5/1

       x = 55/4

       x = 13i3/4

 

d) 2/3x = 2i1/7

    2/3x = 15/7  /*21

     14x = 45  /:14

       x = 45/14 

       x = 3i3/14