4ta tarea

ENCONTRAR EL VALOR DE x
1.- ((14/2)(15/7)) / ((256/14)(357/19)) +35x = 753951 + 456852 - 852963

(14/2)(15/7)=210/14
(256/14)(357/19)=91392/266
(210/14)/(91392/266)+35x=753951+45682-852963
(210/14)(91392/266)=55860/1279488
55860/1279488+35x=357840
-1223628+35x=357840
-357840-1223628=-35x
-35x=-865738
x=865738/-35 x=24735

2.- 5/3 + 14/7 = 4x

5/3+14/7=35+42/21=77/21=3.6
4x=3.6
x=3.6/4 x=0.9


3.- 127/4 + 456/4 - 123/4 = 16x + 64/4

127/4+456/4=508+1824/16=2332/16
2332/16-123/4=9328-1968/64=7360/64 64/4=16
7360/64=16x+16
7360/64=115
16x+16=32x
32x=115
x=115/32
x=3.5



4.- (2)(-3)(5) + 25X = (147/15)X - 248/43 - 223/105

-248/43=5.7 -223/105=-2.1
-30+25=29.4x-5.7-2.1
5.7+2.1+30=29.4x-25x
37.8=4.4x
x=37.8/44=8.5 x=8.5



5.- (45/7)/(198/26) + 28X = 13 + (14/67)(222/111)

(45/7)(198/26)=1170/1386 (14/67)(222/111)=3108/7437
1170/1386+28x=13+3108/7437
1170/1386=0.8 3108/7437=0.4
0.8+28x=13+0.4
-28x=-13-0.4+0.8
-28x=-12.6
x=-12.6/-28
x=0.45


6.- 48/5 + (2/3)X = 1657 + 345

48/5+2/3=144+10/15=154/15=10.2
1657+345=2002
x=2002/-10.2
x=-196.2


7.- (2)(-5)(-7)(-8)(9) + 257896 -1247 -5X = 951753 + 456

(2)(-5)(-7)(-8)(9)=-5040+257896-1247-5x=952209
-5040+257896=252856-1247=251609
251609-5x=952209
-5x=952209-251609
-5x=700600
x=700600/5
x=140120


8.- 23/3 + (16/7)x = 23x -12

23/3+16/7=161+48/21=209/21=9.9x
9.9x-23x=12
9.9-23=-13.1x
-13.1x=12
x=12/13.1
x=0.9


9.- 12x - 18 + (23/7) = 145/24 - 4x

12x-18+3.2=6.04-4x
-18+3.2=6.04-4x-12x
16x=8.8
x=8.8/16
x=0.55



10.- (6/7)(3/4) + 3x = 4 -(17/5)
(6/7)(3/4)=18/28=0.6
0.6+3x=4-3.4
3x=3.4+4-0.6
3x=6.8
x=6.8/3
x=2.2

tercera tarea

I. RESOLVER LAS SIGUIENTES IDENTIDADES
1) -25X +157 -18 = -33X +25 -67

-33x-25=+57-18-25+67

-33x-25x =8x

8x=+157-18-25+67

8x=181

x=181/8

x=22.6

2) (2)(-4)(5) + (-2)(3)(8) + 16X = 145


(2)(-4)(5)=-40

(-2)(3)(8)=-48

-40-48+16x=145

16x=145+40+48

16x=233

x=233/16

x=14.5


3) ((15/4)(16/7)/(33/22)(12/21))X + 24 - (16/7) = 52 - (45/5)


(15/4)(16/7)=240/28


(33/22)(12/21)=396/462

(240/28)/(396/462)

(16/7)=2.2 (45/5)=9

(240/28)/(396/462)x+24-2.2=52-9

(110880/11088)x-21.8=43

10x=43+21.8

10x=64.8

x=64.8/10

x=6.48


4) ((29/7)(134) -45 + 29 = 15X - (34/6)

(29/7)(134/1)=38886/7-45+29=15x(34/6)

481.1=9.4x

x=481.1/9.4

x=51.1


5) 256 - (425/25) + (156/4) = 36X


(425/25)=17 ( 156/4)=39

256-17+39=36x

36x=278

x=278/36

x=7.7


6) (-2)(-3)(-5)(4) + (-6)(-7)(4) - 41 = 67 -18X


-120+168-41-67=18x

48-41=7

7-67=-60

18x=-60

x=60/18

x=3.3


7) (12/9) + (13/15) - (18/3) + 222X = 475 - (11/4)


156/135-18/3=468/2430

222x=475+(11/4)(468/2430)

222x=475+(5148/9720)

222x=475+0.529

222x=475.529

x=475.529/222

x=2.14

II. ESCRIBE LA EXPRESIÇON ALGEBRAICA CORRESPONDIENTE


8) Quince veces un número

15x

9) Un número entre 25

x/25

10) Cuatro veces un número menos 8

4x-8

11) La doceava parte de un número multiplicado por 3

x/12 (3)

12) La diferencia de un número y 25


-x25

13) La suma de 14 y un número


+14x


14) El doble de un numero menos la tercera parte de otro

2x-x/3