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# Please help with algebra?

I had a mind blank while studying!

ap=px+c

Write p in terms of a, c and x.

Please include step by step working out. Thanks

### 4 Answers

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- 8 years agoFavorite Answer
Ok, easy peasy. This is asking for p as the subject, so we want it to look like p=blah blah blah, just like a normal function with y=x+1 or something. To do this, we want to collect all of our p's together, so lets subtract px from both sides with ap-px=px+c-px which simplifies to ap-px=c. Then we are going to factor out the p to get p(a-x)=c, and then we can divide everything by a-x to finally get p=c/(a-x)

Source(s): Year 12 math methods and specialist math - 8 years ago
So basically find what p is.

ap=px+c

Move px over:

Ap-px=c

Take p out of both ap and -px:

P(a-x)=c

Divide a-x from both sides:

P=c/(a-x)

Hope this helped :)

Source(s): Me:)

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