# Need help rearranging formulas?

Can someone please teach me how to rearrange formulas? For example, the following formula: Pi/Ti = Pf/Tf. How would I rearrange it so that I can solve for Tf? PLEASE SHOW STEPS I NEED HELP!

### 2 Answers

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- 1 decade agoFavorite Answer
pi pf

--- = ----

ti tf

multiple tf to the left side so it's like : (tf)(pi)/ti = pf

then muptiply the right by ti so it's : (tf)(pi) = (pf)(ti)

then divide the let by pi so it's like (tf) = (pf)(ti)/(pi)

- Pi R SquaredLv 71 decade ago
Hi,

Pi. . . Pf

---- = ----

Ti. . . Tf

Cross multiply. then solve for Tf.

PiTf = PfTi

. . . Pf Ti

Tf = --------- <==ANSWER

. . . . Pi

Io hope that helps!! :-)

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