What do I do, I'm the HORRIBLE when it comes to math :'( I have a lot more of these but i need to learn how to do this.

1/a + 1/b = c for a

P= A/1+rt for r

I= kE/R for R

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- Mar 4th 2011, 10:29 AMmrmyers22Solve for the specified variable?
What do I do, I'm the HORRIBLE when it comes to math :'( I have a lot more of these but i need to learn how to do this.

1/a + 1/b = c for a

P= A/1+rt for r

I= kE/R for R - Mar 4th 2011, 11:00 AMQuacky

Start by removing the fractions (just multiply through by the denominators, as below):

Rearrange so that all terms involving 'a' are on one side of the equation:

Factor out an :

Divide through by the non-a factor:

Try the others yourself, it's the same principle! Post your working if you're still unable to continue. - Mar 4th 2011, 11:56 AMWilmer