Răspuns :
1/2+1/4+1/7+1/14+1/28= aducem la același numitor...28 =
14/28+7/28+4/28+2/28+1/28=
28/28 = 1
Sper că te-am ajutat!
14/28+7/28+4/28+2/28+1/28=
28/28 = 1
Sper că te-am ajutat!
1 / 2 + 1 / 4 + 1 / 7 + 1 / 14 + 1 / 28
= 1 / 2 + 1 / 4 = > 2 / 4 + 1 / 4 = > 3 / 4
= 3 / 4 + 1 / 7 = > 21 / 28 + 4 / 28 = > 25 / 28
= 25 / 28 + 1 / 14 = > 25 / 28 + 2 / 28 = > 27 / 28
= 27 / 28 + 1 / 28 = > 28 / 28 => > > > 1
= 1 / 2 + 1 / 4 = > 2 / 4 + 1 / 4 = > 3 / 4
= 3 / 4 + 1 / 7 = > 21 / 28 + 4 / 28 = > 25 / 28
= 25 / 28 + 1 / 14 = > 25 / 28 + 2 / 28 = > 27 / 28
= 27 / 28 + 1 / 28 = > 28 / 28 => > > > 1