Jason M.

asked • 07/25/16

3(x+2)-5=15+x

Can someone please explain to me what is the value of x?

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Nicolas M. answered • 07/25/16

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3(x+2)-5=15+x
 
3x + 6 - 5 = 15 + x
 
3x -x = -6 + 5 +15
 
2x = 14        
 
x = 7
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Jason M.

Can you please elaborate a little more how you came up with the answer?
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07/26/16

Nicolas M.

Sure. 
 
3(x+2)-5=15+x   (This is the initial statement)
 
First, we multiply each factor in the parenthesis by 3:
 

3x + 6 - 5 = 15 + x
 
Because we have two x variables (with different coefficients) in both sides of the equal symbol, is necessary to place both x variables in one side, and keep the numbers in the other side:

3x -x = -6 + 5 +15
 
Adding common terms in both sides:

2x = 14

Solution:  x = 7
 
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07/26/16

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