Question

calculati (2/3+1/2)×15/20,b)8/9×3/4;c)1/2÷(1-1/2)÷(1/5+4×(1/3+1/3÷2))+1/11​

Answer 1

Răspuns:

a)

(2/3+1/2)×15/20 = 7/6 * 15/20 = 105/120

b)

8/9 * 3/4 = 24/36

c)

1/2 ÷ (1-1/2)÷(1/5+4×(1/3+1/3÷2))+1/11​

= 1/2 ÷ 1/2 ÷ (1/5+4×(1/3+1/3÷2))+1/11​

= 1 ÷ (1/5 + 4×(1/2)) + 1/11)

= 1 ÷ (1/5 + 2) + 1/11

= 1 ÷ 11/5 + 1/11

= 5/11 + 1/11

= 6/11