Question

b)x-(7 1/3+ 2 3/5)=3 1/4 ;

c)17 1/2 -(9 1/3+x)= 4 1/4;

oblicz niewiadoma liczbe x

Answer 1

b)

x-(7 1/3 + 2 3/5) = 3 1/4

x - 7 1/3 - 2 3/5 = 3 1/4

x = 3 1/4 + 7 1/3 + 2 3/5

x = 3 3/12 + 7 4/12 + 2 3/5

x = 10 7/12 + 2 3/5

x= 10 35/60 + 2 36/60

x = 13 11/60

 

c)

17 1/2 -(9 1/3+x)= 4 1/4

17 1/2 - 9 1/3 - x = 4 1/4

-x = 4 1/4 + 9 1/3 - 17 1/2

-x = 4 3/12 + 9 4/12 - 17 6/12

-x = 13 7/12 - 17 6/12

-x = -3 11/12

x = 3 11/12