1ER TAREA 1ª4 ALGEBRA T.MAT 21/08/09

1. 3+4+5-6-7-4+7-4+9=
3 + 4 +5 + 7 + 9 - 6 - 7 - 4 - 4 =
28- 21=
7


2. -6+4-6+2-9-8+2+3+6-8-12-43+67=
+ 4 + 2 + 2 + 3 + 6 + 67 -6 - 6 - 9 - 8 - 8 - 12 -43=
17+67-29-63=84 - 92 =
-8

3 .(2)(-12)(3)(3)(-2)(1)(3)=
(-24) (+9) (-2) (3) =
(-216) (-6) =
+1296

4. (-2)(3)(1)(-4)(5)(6)(-7)(-8)=
(-6) (-4) (+30) (+56)=
(+24 ) (+1680)=
40 320

5. -4+5-6+7-8+9-12+24-33(2)(-3)(4)(5)=
+ 5 + 7 + 9 +24 - 4 -8 -12 -33 (2) (-3) (4) (5)=
+12+33-12-45(-6) (20)=
45-56-120=
45-176=
-131

Números Racionales
6. (3/4)+(5/9)=
15/36=
3/12=
1/4

7. (6/2)-14/4)=
84/4=42/4=
21/2

8. (3/5)(12/3) - (4/7)(6/11)=
36/15-24/77=
2772-360/1155=
2412/1155=
804/385

9. (((4/3)(6/2)/(4/4)))+(2/5) + 3/4 - 16/7=
4/3*6/2=
24/6 /4/4=
96/24+5/2 =
480+48/120=
520/120+3/4=
2080+360/480=
2440/480-16/7=
17080-7680/3360=
9400/3360=
4700/1680=
2350/480=
1175/420=
235/210=
47/42


10. (18/5)(9/2) + 25/3 - 6/4 - 7/15 =
18/5*9/2=
162/10+25/3=
486 + 250/30=
736/30 - 6/4=
2944-180/120=
2764/120 - 7/15=
41460-840/1800=
40620/1800=
20310/900=
10155/450=
2031/90=
677/30

11. (14/3)/(23/11) + 9/6(5/4)=
14/3 / 23/11=
154/69+9/6=
924 +621/414=
1545/414*5/4=
7725/1656=
2575/552=
515/184

12. (((5/25)(16/2)/(25/7)(13/6))/(12/7) + 3/2 =
5/25*16/2=
80/50 / 25/7=
50/1250*13/6=
650/7500 / 12/7 =
4550/90000+3/2=
9100+120000/80000=
129100/80000=
25820/16000=
5164/3200=
1291/800