Question

Oblicz:

a) 2/3 * (1/2-1/6)
b) (3/4-1/5):1/2
c) 4,8 + 1/3 * (1,2 - 0,6)

potrzebne mi są obliczenia nie sam wynik !!

Answer 1

a) 2/3 * (1/2-1/6)=⅔ * (3/6 -1/6 ) =⅔ * 2/6= 2/9

b) (3/4-1/5):1/2= (15/20- 4/20 ) *2 = 11/20 *2 = 11/10 = 1.1

c) 4,8 + 1/3 * (1,2 - 0,6)= 4,8 + ⅓ * ⅗ = 4,8 +⅕ =4,8 + 0,2 = 5

Answer 2

a) = 2/3 * (3/6 - 1/6) = 2/3 * 2/6 = 4/18 = 2/9

b) = (15/20 - 4/20) / 1/2 = 11/20 * 2 = 22/20 = 11/10 =1 1/10

c) = 4,8 + 1/3 * (1,2 - 0,6) = 4,8 + 1/3 * 0,6 = 4,8 + 1/3 * 6/10 = 4,8 + 2/10 = 4,8 + 0,2 = 5

Answer 3

a) 2/3*(1/2-1/6)=
= 2/3*(3/6-1/6)= [1/2 zmieniłam na 3/6 aby był ten sam mianownik]

= 2/3 * 2/6 = 4/18 = 2/9

b) (3/4 - 1/5) : 1/2 =
= (15/20 - 4/20) : 1/2 =
= 11/20 :1/2 =
= 11/20 * 2/1 = 11/10 = 1,1

 

c) 4,8 + 1/3 * (1,2 - 0,6) =
= 4,8 + 1/3 * 0,6 =

= 4 8/10 + 1/3 * 6/10 =

= 4 8/10 + 6/30 =

= 4 8/10 + 2/10 =
= 5