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

TERCER TAREA 1ª4 ALGEBRA T. MAT 04/09/09

1) 12x -(5/8) -23 = 11
12x - (5/8) = 11+23
12x - 0.625 = 34
12x = 34 + 0.62512x = 34.625
x = 34.625 ÷ 12
x = 2.885

2) ((6/6)(4/9)) + 23x - (7/5) = (9/2)
((1)(0.445)) + 23x - (1.4) = 4.5
0.445 + 23x - 1.4 = 4.5
23x = 4.5 - 0.445 + 1.423x = 5.445
x = 5.445 ÷ 23
x = 0.236

3) ((18/6)/(24/17))x + 25 -18 = 65
(3 ÷ 1.411)x + 25 - 18 = 65(2.126)x + 7 = 65
2.126x = 65 - 7
2.126x = 58
x = 58 ÷ 2.126
x = 27.281

4) (-2)(5)(3) + (-3)(-6)(5) +(1/2)x +4 = 19
-30 + 90 + 0.50x + 4 = 19
60 + 0.50x + 4 = 19
0.50x = 19 - 60 - 4
0.50x = -45
x = -45 ÷ 0.50
x = -90

5) ((19/13)(27/6)/(/35/4))+ 22 = 73x
(((1.461)(4.5)) ÷(8.75)) + 22 =73x
(6.57 ÷ 8.75) + 22 = 73x
0.750 + 22 = 73x
22.750 = 73x
22.750 ÷ 73 = x
0.311 = x
x = 0.311

6) 184x -235 -6/5 = 212x -66
184x - 325 - 1.2 = 212 - 66
184x - 212x - 325 - 1.2 = -66
-28x - 236.2 = -66
-28x = -66 -236.2
-28x = -302.2
x = (-302.2) ÷ (-28)
x = 10.792

7) (44/16)(2) - 15x +33 = 45x -79 + (12/6)
(2.75)(2) - 15x + 33 = 45 - 79 - 2
5.50 - 15x + 33 = 45x - 81
-15x - 45x = - 81 - 5.50 - 33
-60x = - 119.50
x = (- 119.50) ÷ (- 60)
x = 1.991

8) La suma de un número y 18
x + 8

9) Un número multiplicado por 5 y disminuido en 4
5x - 4

10) La cuarta parte de un Número multiplicado por 17
(x/4)(17)

11) Un tercio de un número
x/3

12) Un número entre 7
x/7

13) La cuarta parte de un numero aádido 9
x/4 + 9

14) La diferencia de 36 y un número
36-x