Question

13) b) [2,4(5) - 4,6 + 1,(7)] • 2,(72) =​

Answer 1

Răspuns:

R:10

Explicație pas cu pas:

13) b) [2,4(5) - 4,6 + 1,(7)] • 2,(72) =

[2 (45-4)/90-46/10+1 7/9]×2 72/99=

(2 41/90-46/10+16/9)270/99=

(221/90-⁹46/10+¹⁰16/9)30/11=

(221-414+160)/90×30/11=33/90×30/11=

990/99=10