martes, 22 de septiembre de 2009

cuarta tarea algebra

1.-(5/3)+(4/3)=2x
9/3=2x
3=2x
3/2=x
1.5=X

2.- (6/7)(3/9)+3x=4-(17/5)
18/63+3x=4-(17/5)
0.2+3x=4-3.4
3x=4-3.4-0.2
3x=0.4
x=0.4/3
x=0.13

3.- (23/3)+(16/9)x=23x-12
7.6+1.7x=23x-12
7.6+24.7x=-12
24.7x=-12-7.6
24.7x=-19.6
x=-19.6/24.7
x=-0.7

4.- 12x-18+(23/7)=(145/2)-4x
12x-18+3.2=72.5-4x
16x-18+3.2=72.5
16x=72.5+18-3.2
16x=87.3
x=87.3/16
x=5.45625

5.- ((14/2)(15/9)/(125/25))=17/3+(13/4)x
(210/18)/(125/25)=17/3+3.25x
5250/2250=17/3+3.25x
2.3=5.6+3.25x
2.3-5.6=3.25x
-3.3=3.25x
-3.3/3.25=x
-1.0=x

6.- 22-178+33/5-16x=147+(248/16)x
22-178+6.6-16x=147+15.5x
22-178+6.6-147=15.5x+16
-156+6.6-147 =31.5x
-149.4-147=31.5x
296.4=31.5x
296.4/31.5=x
9.40=x

7.- (2)(-3)(5)+25x =(147/15)x-248/43-223/105
-30+25x=(147/15)x-248/42-223/105
-30+25x=9.8x-5.9-2.1
-30+15.2x=-5.9-2.1
15.2x=-5.9-2.1+30
15.2x=22
x=22/15.2
x=1.44737

8.- (45/7)/(198/26)+28x=13+(14/67)(222/111)1170/1386+28x=13+3108/1437
0.8+28x=13+2.1
28x=13+2.1-0.8
28x=14.3
x=14.3/28
x=0.5

9.- 48/5+(2/3)x=1657+345
9.6+0.6x=1657+345
0.6x=1657+345-9.6
0.6x=1992.4
x=1992.4/0.6
x=332.06667

10.- (2)(-5)(-7)(-8)(9)+257896-1247-5x=951753+456
-5040+257896-1247-5x=951753+456
5x=951753+456+5040-257896+1247
5x=700600
x=700600/5
x=140120

lunes, 7 de septiembre de 2009

tercera tarea pensamiento algebraico

I. RESOLVER LOS SIGUIENTES EJERCICIOS (Escribir todo el procedimiento)

1) 12x -(5/8) -23 = 11
12x=11+23+(5/8)
12x=34+0.62
12x=34.62
x=34.62/12
x=2.88

2) ((6/6)(4/9)) + 23X - (7/5) = (9/2)
(1)(0.45)+23
x=(4.5)+(1.4)(0.45+23)
x=4.5+1.423.45
x=5.9
x=5.9/23.45
x=0.25

3) ((18/6)/(24/17))x + 25 -18 = 65
(3) /(1.41)
x=65+18-252.12
x=65+18-252.12
x=83-252.12
x=58x=58/2.12
x=27.35

4) (-2)(5)(3) + (-3)(-6)(5) +(1/2)x +4 = 19
(1/2)
x=19-4-(-3)(-6)(5)-(-2)(5)(3)(1/2)
x=15-(-90)-(-30)(1/2)
x=105-(-30)(1/2)
x=135
x=135/0.5
x=270

5) ((19/13)(27/6)/(/35/4))+ 22 = 73x
((19/13)(27/6)/(35/4)+22=73x
(6.3)(4.5)/(8.75)+22=73x
(28.35/8.75)+22=73x
3.24+22=73x
25.24=x/730.345=x
x=0.345

6) 184x -235 -6/5 = 212x -66
184x-212x=-66+235+6/5
-28x=169+6/5
-28x=169+1.2
-28x=170.2
x=170.2/-28
x=-6.07

7) (44/16)(2) - 15x +33 = 45x -79 + (12/6)
15x+45x=-79-(12/6)-33+(44/16)(2)
60x=-79-(12/6)-33+(44/16)(2)
60x=-79-(12/6)-33+(44/16)(2)
60x=-79-(2)-33+(2.75)(2)
60x=-158-33+(2.75)(2)
60x=-191+(2.75)(2)
60x=-188.25(2)
60x=-376.5
x=-376.5/60
x=-6.275

II.- ESCRIBIR LA ECUACION CORRESPONDIENTE.

8) La suma de un número y 18

9/) Un número multiplicado por 5 y disminuido en 4
(8)*(5)= 40 - 4= 36

10) La cuarta parte de un Número multiplicado por 17
44/ 4=11*17=187
11) Un tercio de un número
90/3= 30
12) Un número entre 7
14/7=2
13) La cuarta parte de un numero añádido 9
360/4=90+9=99
14) La diferencia de 36 y un número
36 y 36 =1

martes, 1 de septiembre de 2009

segunda tarea 1-4

1.- ((6/14)(2/13)/(5/2))+ 2/7 = 287/622
6/14, 2/13= 12/182 entre 5/2=60/364 + 2/7= 420+728/2548= 1148/2548= 574/1274

2.- 9/7 + 6/5 -18/12 -1/5 = 275/350
45+42/35=87/35- 18/12=1044-630/420=414/420-1/5=2070-420/2100=1650/2100, 550/700

3.- 3/9 - 16/4 +25 = 602/24
12/144+25/1=12+3600/144=3612/144=1204/48

4.- 25 - 16 - 48 - 76 + 65 + 82 - 45 + 12 = -1
9,-39,-115,-50,32,-13

5.- (2)(-9)(3)(-8)(7)(-6)(5)(4)(16)(-2) = 11612160
-18,-54,432,3024,-18144,-90720,-362880,-5806080
/
6.- 11/3 + 22/8 -3/4 = 17/3
11/3+22/8=88+66/24=154/24-3/4=616-72/96=544/96=272/48=136/24=68/12=34/6=

7.- ((13/6)(33/4)/(19/16)) + 22 -18 = 2387/387
429/24 entre8151/384+22/1=851+8448/384=9299/384-18/1=9299-6912/384

8.- 17 - 13 +62 -((33/3)(15/3)/3) =


9.- (17)(1/5)(-4)(-6)(-2/7)(1/6)(45/6)(-2)= 1132/105
17/1, 1/5=17/5-4/1=17-20/5=3/5-6/1=3-30/5=27/5-2/7=189-10/35=
179/35, 1/6=1074+35/210=1109/210+45/6=6654+9450/1260=16104/1260-2/1=
16104-2520/1260=13584/1260=4528/420=2264/210

10.- -15 +15 -48 -65 -36 +52 +89 -79 +62 -69 =-94
-48,-113,-144,-97,-8,-87,-25