Question

calcule a) 0,777...+1/2 b)1,222...+1/6 c)0,777...-1/2 d) (0,222...+1/3

Answer 1

a
7/9 + 1/2 = ( 14 + 9 )/18 = 23/18 ***
b
1 inteiro 2/9   = 11/9
11/9 + 1/6 =  ( 22 + 3)/18 = 25/18 ****
c
7/9 - 1/2  =  ( 14 - 9)18 = 5/18 ***
d
2/9 + 1/3 = ( 2 + 3)/9 = 5/9 ****