martes, 22 de septiembre de 2009

CUARTA TAREA ALGEBRA
ENCONTRAR EL VALOR DE x

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-(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=(147/14)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


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