Question

Rozwiąż równanie i sprawdź.

a) 3 5/6 + a = 5 2/9

b) b - 1 3/5 = 2 5/6

c) 4 1/5 - c = 2 2/3

Answer 1

a) 3 5/6 + a = 5 2/9

23/6 + a = 47/9 

a = 47/9 - 23/6

a= 94/18 - 69/18

a= 25/18

a= 1 7/18

 

spr:

3 5/6 + 1 7/18 = 5 2/9

69/18 + 25/18 = 94/18

94/18 = 94/18

 

b) b - 1 3/5 = 2 5/6

b - 8/5 = 17/6

b - 48/30 = 85/30

b= 85/30 + 48/30

b= 133/30 

b= 4 13/30

 

spr:

133/30 - 48/30 = 85/30

85/30 = 85/30

 

c) 4 1/5 - c = 2 2/3 

21/5 - c = 8/3

63/15 - 40/15 = c

23/15 =c

c = 1 8/15

 

spr:

63/15 - 23/15 = 40/15

40/15 = 40/15