Respuestas
Respuesta dada por:
2
a.
x/2 + 3/4 = 15/4
x/2 = 15/4 - 3/4
x = 3 * 2
x= 6
b.
x/6 + 2x/3 = 15/2
x/6 + 4x /6 = 15/2
5x = 15/2 * 6
x = 45 : 5
x = 9
c.
3(x + 2) 2 - x
---------- = -------
2 5
3x + 6 2 - x
-------- = -------
2 5
15x + 30 = 4 - 2x
15x + 2x = 4 - 30
17x = -26
x = -26/17
d.
3(5x + 2) 3 - 2x
------------- = ----------
7 3
15x + 6 3 - 2x
---------- = ---------
7 3
45x + 18 = 21 - 14x
45x + 14x = 21 - 18
59x = 3
x = 3/59
e.
2 + x x
------ + 5 = -----
5 2
2 + x + 25 x
-------------- = -----
5 2
4 + 2x + 50 = 5x
2x - 5x = - 50 - 4
-3x = -54
x = -54 : (-3)
x = 18
f.
2 + 3x 2x
2x - ----------- = -------- + 4
5 3
10x -2 - 3x 2x + 12
-------------- = --------------
5 3
30x - 6 - 9x = 10x + 60
30x - 9x -10x = 60 + 6
11x = 66
x = 6
saludos
x/2 + 3/4 = 15/4
x/2 = 15/4 - 3/4
x = 3 * 2
x= 6
b.
x/6 + 2x/3 = 15/2
x/6 + 4x /6 = 15/2
5x = 15/2 * 6
x = 45 : 5
x = 9
c.
3(x + 2) 2 - x
---------- = -------
2 5
3x + 6 2 - x
-------- = -------
2 5
15x + 30 = 4 - 2x
15x + 2x = 4 - 30
17x = -26
x = -26/17
d.
3(5x + 2) 3 - 2x
------------- = ----------
7 3
15x + 6 3 - 2x
---------- = ---------
7 3
45x + 18 = 21 - 14x
45x + 14x = 21 - 18
59x = 3
x = 3/59
e.
2 + x x
------ + 5 = -----
5 2
2 + x + 25 x
-------------- = -----
5 2
4 + 2x + 50 = 5x
2x - 5x = - 50 - 4
-3x = -54
x = -54 : (-3)
x = 18
f.
2 + 3x 2x
2x - ----------- = -------- + 4
5 3
10x -2 - 3x 2x + 12
-------------- = --------------
5 3
30x - 6 - 9x = 10x + 60
30x - 9x -10x = 60 + 6
11x = 66
x = 6
saludos
ñata13:
suerte!!!
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