View Full Version : Transposing equations
tbyrn
Jan 12, 2009, 01:37 AM
I am having a hard time transposing this equation.
P = 2Pi(F1 - F2)(r) n/60 find for n.
So far I have P/2Pi=(F1-F2)(r)n/60
My next step that I can think of is to multiply both sides by 60 so it woul look like
(60)P/2Pi=(F1-F2)(r)(n).
I don't just keep stacking the division up on the left hand side do I?
Capuchin
Jan 12, 2009, 03:11 AM
You're doing it right. You don't "stack up" the divisions, they just go on the bottom. Emember that dividing by r is the same as multiplying by 1/r, if that makes it easier.
Capuchin
Jan 12, 2009, 03:19 AM
Hint: You can do it in one step by multiplying bothe sides by 60/(2Pi(F1 - F2)(r))
tbyrn
Jan 12, 2009, 03:27 AM
You're doing it right. You don't "stack up" the divisions, they just go on the bottom. emember that dividing by r is the same as multiplying by 1/r, if that makes it easier.
So my answer would be n = P(60/2π(F1-F2)(r))
Capuchin
Jan 12, 2009, 03:30 AM
Yup :)
It's nice and easy when everything is division or multiplication.
It gets a bit trickier when the thing you need to transpose for is being added to or taken away from.
arthur97
Mar 8, 2012, 10:08 AM
In transposing whatever you do to one side you do to the other side. P= [2Pi(F1-F2)r] N / 60
1] Multiply both sides by 60 / 60 P = [2Pi(F1-F2)r] N 60 /60 After cancelling/ 60 P = [2Pi(F1-F2)r]N
2] Divide both sides by [2Pi(F1-F2)r] 60 P /[2Pi(F1-F2)r] = N
3] Bring over to to the left hand side of the equation if you like.