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x over 3x+2-2=5

 Jun 1, 2015

Best Answer 

 #1
avatar+111395 
+10

x over 3x+2-2=5  .... kazza1969, the way you have this written, we have :

 

x/(3x) + 2 - 2  = 5  simplify

 

x/(3x)  = 5     multiply both sides by 3x

 

x = 15x      subtract 15x  from both sides

 

-14x = 0     which implies that x = 0.......but, this means one of the terms in the original problem  - x/(3x)  -   would result in 0/0.......and that's an indeterminate quantity

 

I have a feeling that you meant this:

 

x /(3x + 2) - 2 = 5    add 2 to both sides

 

x/(3x + 2)  = 7    multiply both sides by 3x + 2

 

x = 7(3x + 2)    simplify

 

x = 21x + 14    subtract 21z from both sides

 

-20x = 14     divide by -20 on each side

 

x = -14/20  = -7/10

 

 

 Jun 1, 2015
 #1
avatar+111395 
+10
Best Answer

x over 3x+2-2=5  .... kazza1969, the way you have this written, we have :

 

x/(3x) + 2 - 2  = 5  simplify

 

x/(3x)  = 5     multiply both sides by 3x

 

x = 15x      subtract 15x  from both sides

 

-14x = 0     which implies that x = 0.......but, this means one of the terms in the original problem  - x/(3x)  -   would result in 0/0.......and that's an indeterminate quantity

 

I have a feeling that you meant this:

 

x /(3x + 2) - 2 = 5    add 2 to both sides

 

x/(3x + 2)  = 7    multiply both sides by 3x + 2

 

x = 7(3x + 2)    simplify

 

x = 21x + 14    subtract 21z from both sides

 

-20x = 14     divide by -20 on each side

 

x = -14/20  = -7/10

 

 

CPhill Jun 1, 2015

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