2da tarea 1-4

1.-86/14)(2/13)=6/91 (6/91)/5/2=12/455 12/455+217=142/455

2.- 9/7+6/5-87/35 87/35/18/12=69/70 69/70-1/5=11/14

3.- 3/9 16/4=-11/3 (-11/3)+(25)=64/3

4.-25-16=9 9-48=-39 -39-76=-115 -115+658=-50 -50+82=32 32-45=-13 -13+12=-1

5.-

6.-11/3+22/8-77/12 77/12-3/4=17/3

7.-(13/6)(33/4)=143/8 (143/8) / 19+22=-704/19 704/19-18=362/19

8.- 17-13=4 4+62=66 (33/3) (15/3)=495/9 (495/9) / (3)=55/3 66-55/3=143/3

9.-
10.-