SEGUNDA TAREA 1-5 TURNO MATUTINO ALGEBRA 28/08/09

1.- x=-2=(27/80)(-2)=-54/80-24-36=
-54/80-60/1=574-4800/80=
-4746/80

x=2=906/80


2.- x=3
39-35+2/7-15/8=
16-105/56= -89/56
4+(89/56=224-89/56=135/56

x=-3=
-39-35=-74+2/7=-518-2/7=-516/7 - 15/8= -4128-105/56=-4023/56


3.-21(-4)=84 16(-4)=64
84-64=148-18=-166+23=-143-65=-208+79=-287-45(-4)=287+180=-107

x=5= 21(5)-16(5)=
105-80=25-18=7+23=30-65=-35+79=44-225=-181


4.-x=-6=(9/8)(7/14)=(63/112)/(23/6)=378/2576
(-6)=2268/2576+(1/5)=11340+2576/12880=13916/12880

x=3= 189/1280(3/1)=567/1280+1/5=
2835+1280/6400=
4115/6400

5.- x=5
(23/4)(65/6)=1495/24+10/3=4485+240/72=4725/72+22=
6309/72

x=-7= 1495/24+213(-7)
1495+24-14/3=4485-336/72=
4149/72-15/5=20745-1152/360=
17073/360+22=
17073+7920/360=
24993/360