Question

Oblicz niwiadomą liczbe x i sprawdz nastepujce rownannia vb)3/14 * =1 1/2 d) x * 3 2/5 =6 4/5 e) 4 : x =2/3 h0 x : 1 5/9 =2 2/7 daje naj

Answer 1

b)

3/14 * x =1 1/2

x = 1 i 1/2 : 3/4

x = 3/2 * 4/3

x = 2

 

d)

x * 3 2/5 =6 4/5

x = 6 i 4/5 : 3 i 2/5

x = 34/5 : 17/5

x = 34/5 * 5/17

x = 2

 

e)

4 : x =2/3

x = 4 : 2/3

x = 4 * 3/2

x = 6

 

h)

x : 1 5/9 =2 2/7

x = 2 i 2/7 * 1 i 5/9

x = 16/7 : 14/9

x = 32/9

x = 3 i 5/9