primera tarea 1-5 Algebra.T Mat. 21/08/2009

1.- (2)(3)(-5)(-2)(3)(-7)(8)=-10080

procedimiento:
(6)(-30)(60)(180)(-1260)=-10080

2.-(5)(-5)(3)+2+4-7-12+45-33+75=-3

procedimiento:
-75+2-15+10+75=-3

3.- -134-12+13+54-65+67(2)(-3)(4)=1608

procedimiento:
146+13-11+134(-402)=1608

4.- 12-44+36-76+89-55+243-74=131

procediemiento:
-32-40+34+169=131

5.-(2)(3)(-4)(5)(-6)(7)(-8)(9)(0)=-60480

procedimiento:
(6)(-20)(-120)(840)(-6720)(-60480)

6.- (12/5)(6/3) +(4/9)(8/11)=7608/1485

procedimiento:
72/15+32/99=7128+480/1485=7608/1485

7.-14/3 + 15/2 - 6/4 =32/3

procedimiento:
28+45/6=73/6-6/4=292-36/24=256/24
256/24=128/12=64/6=32/3

8.- (((12/5)(15/4)/(13/7)(16/9))(-5)) + 1/2 =

procedimiento:
180/20 / 208/63= 11340/4160+1/2=22680+5600/11200=28280/11200

9.- (13/22) / (43/45)-16/7=13771

procedimiento:
195/946 - 16/7= 1365-15136/6622=13771/6622

10.-((9/8)(8/6)/(25/4)) + ((13/45)(45/2)) - 16/4 =1183680/432000

procedimiento:
72/48 / 25/4=288/1200+585/90=25920+702000/108000=
727920/108000-16/4=2911680-728000/432000=1183680/432000

11.- (33/17)(45/12) + 3/5 - 18/7 + 16/9 - 25/5 =134735/321300

procedimiento:
1485/204+3/5= 7425+612/1020=8037/1020
8037/1020-18/7=56259-18360/7140=37899/7140+16/9=341091+7156/64260-
25/5=1741235-1606500/321300= 134735/321300