Changing the subject in an equation

Hi,

I know how to change the subject of the formula in an equation like u=v+2t, but I get confused when the equation is for example p=5xyz+5ab^2 making x the subject.

This is the answer I got:

p - 5ab^2= 5xyz

p - 5ab^2/5yz= x

x = p - 5ab^2/5yz

Was wondering if i could get some advice on whether the answer is correct and my steps as to how I got it are correct because I have a feeling I have made a mistake.

Thank you (Nod)

Re: Changing the subject in an equation

Quote:

Originally Posted by

**poochie03** Hi,

I know how to change the subject of the formula in an equation like u=v+2t, but I get confused when the equation is for example p=5xyz+5ab^2 making x the subject.

This is the answer I got:

p - 5ab^2= 5xyz

p - 5ab^2/5yz= x

x = p - 5ab^2/5yz

Was wondering if i could get some advice on whether the answer is correct and my steps as to how I got it are correct because I have a feeling I have made a mistake.

parentheses around your numerator and denominator ...

x = (p - 5ab^2)/(5yz)

... now you're done.