KarenL
KarenL KarenL
  • 13-04-2017
  • Mathematics
contestada

X*2+1/3+2
I do not under this, some help?!

X2132 I do not under this some help class=

Respuesta :

Sxerks Sxerks
  • 13-04-2017
Answer: x = 7
Solution: Let's build up our equation from the information.
Let x be the number.

[tex]LHS = 2x[/tex]
[tex]2x + 1[/tex]
[tex]\frac{2x + 1}{3}[/tex]
Thus, the left hand side becomes:
[tex]\frac{2x + 1}{3} + 2[/tex]

Now, the right hand side is just the number we're thinking of (ie x)

So, this equality becomes: [tex]\frac{2x + 1}{3} + 2 = x[/tex]
[tex]\frac{2x + 1}{3} = x - 2[/tex]
[tex]2x + 1 = 3(x - 2) = 3x - 6[/tex]
[tex]2x - 3x = -6 - 1[/tex]
[tex]-x = -7; x = 7[/tex]
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