4ª tarea de algebra 1-5

ENCONTRAR EL VALOR DE x

1.- (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+34.8x=-5.9-2.1
34.8x=-5.9-2.1+30
34.8x=22
x=22/34.8
x=0.6

2.-(47/7)/(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

3.-48/5 + (2/3)X = 1657 + 345
9.6+0.6x=1657+345
0.6x=1657+345-9.6
0.6x=2082.4
x=2082.4/0.6
x=3470.6

4.-(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

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

6.-(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

7.-(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

8.-12x-18+(23/7)=(145/2)-4x
12x-18+3.2=72.5-4x
8x-18+3.2=72.5
8x=72.5+18-3.2
8x=87.3
x=87.3/8
x=10.9

9.-((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

10.-22-178+33/5-16x=147+(248/16)x
22-178+6.6-16x=147+15.5x
22-178+6.6-0.5x=147
0.5x=147-22+178-6.6
0.5x=296.4
x=296.4/0.5
x=592.8

11.-951357-456258+(22/16)x=145x-654852+123987
951357-456258+1.3x=145x-654852+123987
951357-456258+146.3x-654852+123987
146.3x=-654852+123987-951357+456258
146.3x=-1025964
x=-1025964/146.3
x=-7012.74

3º tarea de algebra 1-5

I. ESCRIBIR LA ECUACIÓN CORRESPONDIENTE

1) Setenta y tres veces un número: 73X
2) un número natural dividido por 15: 3/15
3) La decimosexta parte de un número: X/16
4) La diferencia de 22 y un número: 22-X
5) la suma de un numero y 34: X+34
6) Siete veces un numero menos 5: 7X-5
7) El tercio de un número: X/3


II.- RESOLVER LAS SIGUIENTES IDENTIDADES

8)(23/12)(15/7)-24X=64-11X
-24X+11X=64+345/84
-13X=64+4.10
-13X=68.1
X=68.1/-13
X=5.23

9)45-(28/5)+33/2=16X
16X=-45+28/5-33/2
16X=-45+5.6-16.2
16X=-55.6
X=55.6/16
X=-3.47

10)((11/3)(45/7)/(26/9)(14/3))X+25-18=33
13365/7644X=33-25+18= 13365/76444=1.74
13365/7644X=26
X=26/1.74
X=14.9

11)625-34+(256/4)+42X=758-16/3
42X=758-16/3-625-34+256/4
42X=758-5.3-625-34+64
42X=157.7
X=157.7/42
X=3.75

12)((28/6)(47/3))X+(-2)(-4)(3)-(-2)(-3)(4)(6)=16
1316/18X=16-24+144
1316/18X=136 1316/18=73.11
X=136/73.11
X=1.86

13)((17/4)(16/2)/(55/4))+25-18=44-33X
33X=-44-27.4-25+18
33X=-78.4
X=78.4/33
X=-2.37

14)(11/18)-23+2X=-17X+29-(13/21)
17X=29-(13/21)(11/18)+23
17X=29-(143/378)+23
17X=29-0.38+23
17X=51.62
X=51.62/17
X=3.036

15)1236-458+478-158X=457+(-2)(6)(7)(11)
58X=457+924-1236+458-478
158X=123
X =123/158
X=0.77