anonymous
  • anonymous
- 1/2 x + 2 = x + 7 I still dont understand how to do it
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
how to do what?
anonymous
  • anonymous
whats the question?
anonymous
  • anonymous
- 1/2 x + 2 = x + 7

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More answers

anonymous
  • anonymous
x==-10/3
anonymous
  • anonymous
How did you get to that answer?
anonymous
  • anonymous
I want to learn it, not just get answers haha
radar
  • radar
Follow the "golden rule" of algebra. Thou shalt do to one side of the equal sign as thou do to the other side.
radar
  • radar
In this case subtract x. You now have -1.5x + 2 = 7 Do you see why?
anonymous
  • anonymous
Yeah
radar
  • radar
Continuing, now subtract 2. You now have: -1.5x= 5 Again did you follow?
jiteshmeghwal9
  • jiteshmeghwal9
\[\Huge{\frac{1}{2}x+2=x+7}\]\[\Huge{\frac{x+2}{2}=\frac{x+7}{1}}\]By cross multiplication we have,\[\Huge{(x+2)=2(x+7)}\]Solve this for \(x\).
anonymous
  • anonymous
Yes
radar
  • radar
I think you are on track. We only now have to do is divide by -1.5 We now have x = -(5/1.5) Using calculator divide 5 by 1.5 and prefix the minus sign.
jiteshmeghwal9
  • jiteshmeghwal9
|dw:1352384148089:dw|
radar
  • radar
This gives an odd ball answer of 3.33333
jiteshmeghwal9
  • jiteshmeghwal9
After getting the value u just need t put minus before the digit :)
radar
  • radar
or I should say -3.333 but it needs to be checked out by substituting it in the original problem to be sure we have not erred. To err is human.
radar
  • radar
The original equation was: - 1/2 x + 2 = x + 7 lets call the answer -3 1/3 and substitute it in the original. we would have: -1/2 (-3 1/3) +2 = -3 1/3 + 7 (-1/2)(-10/3) + 2= 3 2/3 10/6 + 2 = 3 2/3 5/3 + 2 = 3 2/3 3 2/3 = 3 2/3 verified!
radar
  • radar
Did following that help, just remember the golden rule and you won't unbalance the equation. When you unbalance the equation it will result in an incorrect answer.
radar
  • radar
This is my input for this morning. Good luck with your studies.
anonymous
  • anonymous
Thank you so much, and thank you for serving in the Army(:
radar
  • radar
No problem and as I saId good luck with your studies. Don't be discouraged when faced with a difficult problem, accept the challenge and try and solve.
radar
  • radar
Oh yes, your flag does not offend me.

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