could you please help me solve 7x+5=3x+21

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Asked 1/21/2009 12:09:36 PM

Updated 2/27/2014 12:31:53 PM

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Flagged by jerry06 [2/27/2014 12:31:53 PM]

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User: could you please help me solve 7x+5=3x+21

Weegy: First you will want to take the 5 and multiply it to the -3X and 4 so it will look like this: 7X -15X-20=-21-7X Got it? Then you will combine the X's on the first side so you will get this: -8X-20= -21-7X Next you need to get the X's on [ one side so you will take the one that is less, in this case -8X and add it to the -7X. When it crosses over the equal mark it becomes a positive so you will get this next: -20=-21 + X <------you get 1X here but it is not necessary to put the 1 Next you want to get the X by itself so you will add the-21 (because it is the lowest) to the other side. Again, when you cross a negative to the other side it becomes a positive. So here is your final result: 1=X Hope that helped! ]
Expert answered|seashell321|Points 945|Rating ***** (+189 -1)

Question

Asked 1/21/2009 12:09:36 PM

Updated 2/27/2014 12:31:53 PM

1 Answer/Comment

This conversation has been flagged as incorrect.

Flagged by jerry06 [2/27/2014 12:31:53 PM]

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jerry06

7x+5=3x+21

7x-3x= 21-5

4x=16

x=16/4

x=4

Added 2/27/2014 12:31:51 PM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [2/27/2014 4:08:18 PM], Rated good by andrewpallarca

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