Question

13. CALCULE a média aritmética entre os números 1,5; 7/8; 0,777... .

Answer 1

= (1,5 + 7/8 + 0,777)/3
= (15/10 + 7/8 + 7/9)/3
= [15/10 (:5)/(:5)+ 7/8 + 7/9].1/3
= (3/2 + 7/8 + 7/9).1/3
= (3/2.1/3 + 7/8.1/3 + 7/9.1/3
= 3/6 (:3)/(:3) + 7/24 + 7/27
= 1/2 + 7/24 + 7/27
Mmc = 216
= (108+ 9.7 + 8.7)/216
= (108+63+56)/216
= (171+56)/216
= 227/216

2,24,27: 2
1, 12, 27: 2
1, 6, 27: 2
1, 3, 27: 3
1, 1, 9: 3
1, 1, 3: 3
1,1,1

= 2.2.2.3.3.3
= 2.3.2.3.2.3
= 6.6.6
= 216

R.: 227/216