Question

resuelve :
1/2+3/2+5/2+4/2+7/2
1/2+2/3+1/3+1/4
9/2-1/3+4/9
3/2+1/6+1/3+1/4

Answer 1

1/2+3/2+5/2+4/2+7/2= 20/2=> 10


1/2+2/3+1/3+1/4= 21/12


9/2-1/3+4/9= 83/18


3/2+1/6+1/3+1/4= 27/12

Answer 2

1)  1/2+3/2+5/2+4/2+7/2 = 20/2 = 10 (y si lo simplificas da 5)
2)  1/2+2/3+1/3+1/4 = 6/12+8/12+4/12+3/12 = 21/12 = 1,75
3)  9/2-1/3+4/9 = 81/18-6/18-8/18 = 83/18 = 4,61
4)  3/2+1/6+1/3+1/4 = 18/12+2/12+4/12+3/12 = 27/12 = 2,25