Thread: Need help Transforming Formulas

S= a-rl ; l
l-r


Also, is this correct?


l= a+(n-l)d ; n

= l-a+1 = n

I'm struggling a bit on this lesson

Thanks

Originally Posted by chris678

S= a-rl ; l
l-r


Also, is this correct?


l= a+(n-l)d ; n

= l-a+1 = n

I'm struggling a bit on this lesson

Thanks

Hi Chris678,

Some students have trouble solving literal equations. Just remember, the rules are the same as solving equations in one variable. It's just that nothing goes away in literal equations. They just move around.

Solve the following for l.



First, multiply both sides by . The distribute the S.





Transpose to the left side and to the right side.



Factor from the left side.



Finally, divide both sides by .



In your second one you are solving for .



Distribute the on the right side.



Next, transpose the and to the left side.



Finally, divide both sides by .