Question

12xa=13 1/3 rozwiaz i sprawdz 2 5/6 :c=4 1/4 / zastepuje kreske ulamkowa x znak mnozenia b:4 1/2m=2 2/3 2 2/5xd=9

Answer 1

12 x a = 13 1/3

a = 13 1/3 :12 = 40/3 x 1/12 = 10/9 = 1 1/9

12 x 10/3 = 40/3 = 13 1/3

 

5/6 : c = 4 1/4

c = 5/6 : 4 1/4 = 5/6 : 17/4 = 5/3 x 4/17 = 10/51

5/6 : 10/51 = 5/6 x 51/10 = 4 1/4

 

b : 4 1/2 = 2 2/3

b = 4 1/2 x 2 2/3 = 9/2 x 8/3 = 12

 

2 2/5 x d = 9

d = 9 : 2 2/5 = 9 : 12/5 = 9 x 5/12 = 15/4 = 3 3/4