Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Algebra problem, solve for B?
I'm already going to Algebra 2 and I forgot how to solve this already. Please help!
B/2 = -7 + B , solve for B
Thanks!
13 Answers
- Jeƒƒ LebowskiLv 61 decade agoFavorite Answer
b/2 = -7 + b
==> b = (-7 + b) * 2
==> b = -14 + 2b
==> 14 = b
- 1 decade ago
B/2=-7+B
rearrange to get
B/2 - B = -7
Change signs to get:
B - B/2 = 7
Factorise lhs
B(1-1/2) = 7
B(1/2) = 7
Multiply both sides by 2/1 to solve for
B=14
- Anonymous1 decade ago
B/2 = -7 + B
B = 2(-7 + B) [explanation: both sides * 2]
B = -14 + 2B
-B = -14 [explanation: - 2B on both sides]
B = 14 [explanation: *-1 on both sides]
- How do you think about the answers? You can sign in to vote the answer.
- 1 decade ago
B/2 = -7 + B multiply both sides by 2
(*2)B/2 = 2(-7+B) simplify
B = -14 + 2B subtract 2B from both sides
B (-2B) = -14 + 2B (-2B) simplify
-B = -14 divide by a negative to isolate your variable
-B/- = -14/- simplify
B = 14
--------------------------------------------------------------------------
TO CHECK:
Put your value for B which is 14 in the equation where B is located
14/2 = -7+14
7 = 7
and the answers are the same so it is correct
Source(s): my head - I'm a teacher - Anonymous1 decade ago
B/2 = -7 + B
B = -14 + 2B (multiplied both sides by 2)
B = -14 (subtract a B from both sides)
Source(s): Easy math - ?Lv 61 decade ago
Hey there!
Here's the answer.
B/2=-7+B --> Write the problem.
B=-14+2B --> Multiply 2 on both sides of the equation.
-B=-14 --> Subtract 2B on both sides of the equation.
B=14 Divide both sides of the equation by -1.
So the answer is B=14.
Hope it helps!
- james wLv 51 decade ago
Multiply across by 2 to get B= -14 +2B
Subtract 2B from both sides to get -B= -14
Divide by -1 to get B=14
So B = 14
Source(s): My algebra class - 1 decade ago
B/2=-7+B
2 * (B/2)=2 * -7+2 * B
B= -14+2B
-2B -2B
-B=-14
-1*(-B)=-1*(-14)
B=14
hope that helps!