i have struggled with this for a while so please help..how to make x the subject of the formula posted in replies..

Question

anonymous · Answer

honeymonster · Answer

$$\frac{ 1 }{ x+1 } - \frac{ 1 }{ y-1 } =1$$

anonymous · Answer

$$1\div \left( x+1 \right)=1\div \left( y-1 \right)+1$$

phi · Answer

can you add the right side in
$$ \frac{1}{x+1}= 1+\frac{1}{y-1} $$
?

phi · Answer

by using a common denominator of y-1

honeymonster · Answer

possibly..not completely sure..sorry

phi · Answer

try.  multiply the 1 by (y-1)/(y-1)

then add the tops and keep the same bottom

anonymous · Answer

$$1=(x+1)[\frac{ 1 }{ y-1 }+1]$$

$$\frac{ 1 }{ \frac{ 1 }{ y-1 }+1 }=x+1$$

$$\frac{ 1 }{ \frac{ 1 }{ y-1 }+1 }-1=x$$

anonymous · Answer

I'm pretty sure that's correct.

anonymous · Answer

And you couldn't use y-1 as a common denominator unless you made all the elements of the equation have a denominator of y-1

honeymonster · Answer

ok thank you everybody :)