Question

Efetue as adições g) 1/2 +1/7+ 5/7 = h) 3/7+5/2+1/14=
I) 4/5+1/3+7/6= j) 1/3+5/6+3/4= por favor me ajudem!!! Não estou conseguindo fazer nem intender !!! I eu estou dando 40 pontos!!

Answer 1

g) 1/2 +1/7+ 5/7
= 1/2 + 6/7
Mmc (2,7)= 14
= (7.1 + 2.6)/14
= (7+12)/14
= 19/14

R.: 19/14


h) 3/7+5/2+1/14
= (2.3+7.5+1.1)/14
= (6+35+1)/14
= 42/14
= 3
R.: 3

7,2,14:2
7,1,7;7
1,1,1
= 2.7
= 14

I) 4/5+1/3+7/6
Mmc (5,3,6) = 30

5,3,6: 2
5,3,3: 3
5,1,1:5
1,1,1

=2.3.5
=6.5
= 30

(6.4+10.1+5.7)/30
(24+10+35)/30
(34+35)/30
= 69/30

j) 1/3+5/6+3/4
= (4+2.5+3.3)/12
= (4+10+9)/12
=23/12

3,6,4: 2
3,3,2: 2
3,3,1: 3
1,1,1
= 2.2.3
= 4.3
= 12

R.: 23/12