Atividade 3.1
por Carlos Alberto Soares Leite [ANcgr] - domingo, 14 junho 2009, 22:13
Boa noite a todos!
a) 2/5 + 2/5 = 2 (1/5) + 2 (1/5) = (2 + 2)(1/5) = 4 (1/5) = 4/5
b) 1/3 + 1/3 = 1 (1/3) + 1(1/3) = (1 + 1)(1/3) = 2 (1/3) = 2/3
c) 1/4 + 1/4 = 1 (1/4) + 1 (1/4) = (1 + 1)(1/4) = 2 (1/4) = (2/4) : (2/2) = 1/2
d) 1/2 + 1/3 = (1/2)(3/3) + (1/3)(2/2) = 3/6 +2/6 = 3(1/6) + 2(1/6) = (3 + 2)(1/6) = 5 (1/6) = 5/6
e) 2/3 + 3/4 = (2/3)(4/4) + (3/4)(3/3) = 8/12 + 9/12 = 8(1/12) + 9(1/12) = (8 +9)(1/12) = 17 (1/12) = 17/12
Abçs,
Carlos.
Nenhum comentário:
Postar um comentário