domingo, agosto 30, 2009

3ra tarea

1.X=-2=-4746/80 X=2=-906/80
(3/5)/(16/9)(-2)+12(-2)-36 (27/80)(-2/1)=-54/80-24-36 (-54/80)-(60/1)=54-4800/80=-4746/80 (3/5)/(16/9)(2)+12(2)-36 (27/80)(2/1)+24-36 (54/80)-(12/1)=54-960/80=-906/80

2.X=-3=4243/56 X=3=125/56
(13)(-3)-35+2/7-15/8 -39-35+2/7-15/8 -74+2/7-15/8 =16-115/56=-99/56 +-74/1=-4144+-99/56=4243/56 13(3)-35+2/7-15/8 39-35 4/1+-99/56=224+-99/56=125/56

3.X=-4=179 X=5=-181
21(-4)-16(-4)-18+23-56+79-45(-4) -84+64-18+23-65+79+180 -167+346=179
21(5)-16(5)-18+23-65+79-45(5) 105-80-18+23-65+79-225 -388+207=-181

4.X=-6=217924/12880 X=3=-231322/12880
(9/8)(7/14)=63/112/23/6=378/2576 (378/2576)(-6/1)+(1/5)-6/1-19 -2268/2576+-6/5-19/1 -2268/2576+-6/5=-11340+-15456/12880=-26796/12880-19/1=-26796--244720/12880=217924/12880
(9/8)(7/14)=63/112 (63/112)/(23/6)=378/2576 (378/2576)(3/1)=1134/2576+(1/5)3/1-19
1134/2576+3/5=5670+7728/12880=13398/12880 13398/12880-19/1=13398-244720/12880=-231322/12880

5.X=5=25785/360 X=-7=8121/360
(23/4)(65/6)=1495/24+(2/3)5/5-(16/5)(5/1)+22 1495/24+10/3-80/5+22 1495/24+10/3=4485+240/72=4725/72-80/5=23625-5760/360=17865/360+22/1=17865+7920/360=25785/360
(23/4)(65/6)=1495/24+(2/3)(-7/1)-(16/5)(-7/1)+22 1495/24+(-14/3)+(112/5)+(22/1) 1495/24+-14/3=-4485+-336/72=-4821/72 +112/5=-24105+8064/360=-16041/360+22/1=-16041+7920/360=8121/360

martes, agosto 25, 2009

2da tarea

1.R=-10080
6 -30 60 180 -1260

2.R=-1
-25 -75 -73 -69 -76 -88 -43 -76 -1

3.R=29
-6 -24 -158 -170 -157 -103 -38

4.R=131
-32 4 -72 17 -38 205

5.R=0
6 -24 -120 720 5040 -40320 -362880

6.R=7608/1485
(12/5)(6/3)=72/15 (4/9)(8/11)=32/99 72/15+32/99=7128+480/1485=7608/1485

7.R=32/3
14/3+15/2=28+45/6=73/6-6/4=292-36/24=256/24=128/12=64/6=32/3

8.R=-359/416
(12/5)(15/4)=128/20 (13/7)(16/9)=208/63 (128/20)/208/63)=11340/4160(11340/4160)(-5/1)=-56700/4160-56700/4160+1/2=-113400+4160/8320=-7180/8320=3590/4160=1795/2080=-359/416

9.R=-13771/6622
(13/22)/(43/15)=195/946-16/7=1365-15136/6622=-13771/6622

10.R=(9/8)(8/6)=72/48/25/4=288/1200 (13/45)(45/2)=585/90 288/1200+585/90=25920+702000/108000=727920/108000 727920/108000-16/4=2911680-1728000/432000=1183680/432000=5

11.R=845879/12915
(33/17)(45/12)=1485/204+3/5=7425+615/1025=840/1025-18/7=56280-18450=37830/7175+16/9=340470+114800/64575=455270/64575-25/5=22761350-1614375/322875=4229395/64575=845879/12915

martes, agosto 18, 2009

tarea 1

1. (2)5+3(-6)-(2)(4)5= -48
10+(-18)-40=
10-18-40=
-8-40=-48

2. ((15)/3)+2(18)-6-3-4= 28
(5)+36-6-3-4=
41-13=28

3. (-2)(-4)(-5)(-3)(1)(7)= 840
(8)(15)(7)=840

4. (2)(-5)(11)(-2)(8)(-5)= -8800
(-10)(-22)(-40)=
(220)(-40)=-8800

5. 2+3-5-6+7+18-39-65= -85

6. ((15)(3)))/3)+2-5(8)-4(-4)= -17
((15)/3)+2-40+16=
5+2-40+16=
7+40+16=
-40+23=-17

7. ((49)/7)(-6)+2-3+4(5)(-2)= -83
(7)(-6)+2-3+4(5)(-2)=
-42+2-3-40=
-82+2-3=-83