Question

Oblicz
A) (2,25-1 5/6) * 2,4=
B) 1 1/9*(5,15 - 4,25)=
daje naj prosze z obliczeniami!!!

Answer 1

A) 
(2,25-1 5/6) * 2,4= (2 1/4-1 5/6) * 2 4/10= (2 3/12 - 1 10/12 ) * 2 4/10= (1 15/12 - 1 10/12) * 2 4/10 = 5/12 * 2 4/10 = 5/12 * 24/10 = 2/2=1

,25 = 25/100 = 1/4
,4 = 40/100 =4/10

b) 1 1/9*(5,15 - 4,25)= 1 1/9*(5 3/20 - 4 1/4) = 1 1/9*(5 3/20 - 4 5/20) = 1 1/9*(4 23/20 - 4 5/20) =1 1/9* 18/20 = 10/9 * 18/20 =2/2=1