CUARTA TAREA 1ª4 ALGEBRA 18/09/09

ENCONTRAR EL VALOR DE x
1.- (5/3)+(4/3) = 2X
1.666 + 1.334 = 2x
3 = 2x
3/2 = x
1.5 = x
x = 1.5



2.- (6/7)(3/9) + 3X = 4 - (17/5)
0.857 + 0.334 + 3x = 4 - 3.4
1.191 + 3x = 0.6
3x = 0.6 - 1.191
3x = - 0.591
x = - 0.591 / 3
x = 0.197



3.- (23/3) + (16/9)X = 23X -12
7.666 + 1.777x = 23x - 12
7.666 + 12 = 23x - 1.777x
19.666 = 21.223x
19.666 / 21.223 = x
0.926 = x
x = 0.926



4.- 12X - 18 + (23/7) = (145/2) -4X
12x - 18 + 3.285 = 72.5 - 4x
12x - 4x = 72.5 + 18 - 3.285
16x = 87.215
x = 87.25 / 16
x = 5.450



5.- ((14/2)(15/9) / (125/25)) = 17/3 + (13/4)X
((7)(1.666)/5) = 5.666 + 3.25x
2.332 = 5.666 + 3.25x
2.332 - 5.666 = 3.25x
-3.334 = 3.25x
-3.334 / 3.25 = x
-1.025 = x
x = -1.025



6.- 22 -178 + 33/5 -16X = 147 + (248/16)X
22 -178 + 6.6 - 16x = 147 + 15.5x
- 149.4 - 16x = 147 + 15.5x
- 16x - 15.5x = 147 + 149.4
- 31.5x = 296.4
x = 296.4 / - 31.5
x = -9.409



7.- (2)(-3)(5) + 25X = (147/15)X - 248/43 - 223/105
- 30 + 25x = 9.8 x - 5.767 - 2.123
25x - 9.8x = -5.767 - 2.123 + 30
15.2x = -37.89
x = -37.89 / 15.2
x = -2.492



8.- (45/7)/(198/26) + 28X = 13 + (14/67)(222/111)
(6.428 / 7.615) + 28x = 13 +((0.208)(2))
0.844 + 28x = 13.416
28x = 13.416 - 0.844
28x = 12.572
x =12.572 / 28
x = 0.449



9.- 48/5 + (2/3)X = 1657 + 345
9.6 + 0.666x = 2002
0.666x = 2002 - 9.6
0.666x = 1992.4
x =1992.4 / 0.666
x = 2991.59



10.- (2)(-5)(-7)(-8)(9) + 257896 -1247 -5X = 951753 + 456
- 5040 + 256649 - 5x = 952209
251609 - 5x = 952209
- 5x = 952209 -251609
-5x = 700600
x = 700600 / -5
x = 140120