Respuesta:
Explicación paso a paso:
A). 2/5x + 1 = 9/2
x= (9/2 -1): 2/5
x= 3,5 : 2/5
x = 2
B). 5/2x - 1/3 = 3/2x - 4/3
5/2x -3/2x = -4/3 +1/3
2/2x = -2/3
x= -2/3
C). 7/2 + 3/5x + 1/2 = 2/10x - 1/8
3/5x - 2/10x = -1/18 -7/2 -1/2
2/5x = -73/18
x= -73/18 : 2/5
x= -365/36
D). -7/15 (x - 1) = 1/15x - 1/30
-7/15x +7/15 = 1/15x -1/30
-7/15x -1/15x = -1/30 -7/ 15
-8/15x = -1/2
x= -1/2 : (-8/15)
x= 101/120
E). -2/5 (x - 2) = 3/4 (x - 1)
-2/5x +4/5 = 3/4 x +3/4
-2/5 x -3/4x = 3/4 -4/5
-23/20x = -1/20
x= -1/20 : (-23/20)
x= 1/23
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Respuesta:
Explicación paso a paso:
A). 2/5x + 1 = 9/2
x= (9/2 -1): 2/5
x= 3,5 : 2/5
x = 2
B). 5/2x - 1/3 = 3/2x - 4/3
5/2x -3/2x = -4/3 +1/3
2/2x = -2/3
x= -2/3
C). 7/2 + 3/5x + 1/2 = 2/10x - 1/8
3/5x - 2/10x = -1/18 -7/2 -1/2
2/5x = -73/18
x= -73/18 : 2/5
x= -365/36
D). -7/15 (x - 1) = 1/15x - 1/30
-7/15x +7/15 = 1/15x -1/30
-7/15x -1/15x = -1/30 -7/ 15
-8/15x = -1/2
x= -1/2 : (-8/15)
x= 101/120
E). -2/5 (x - 2) = 3/4 (x - 1)
-2/5x +4/5 = 3/4 x +3/4
-2/5 x -3/4x = 3/4 -4/5
-23/20x = -1/20
x= -1/20 : (-23/20)
x= 1/23