Question

calcule as letras a,b,c,d.

Answer 1

A)
0,777...+1/2 = 0,777...+0,5 = 1,277...

B)
1,222....1/6 = 1,222...+1,666... = 2,888...

C)
0,777...-1/2 = 0,777...-0,5 = 0,222...

D)
(0,222...+1/3)÷2/3 = (0,222...+0,333...)÷0,666... = 0,555...÷0,666... = 0,8333...