a=b(1/c-1/d) isolate c
the problem says to divide both sides by b first

Question

a=b(1/c-1/d) isolate c
the problem says to divide both sides by b first

ganeshie8 · Answer

thats right, since we need to isolate c,

ganeshie8 · Answer

and we see that, b is multiplied there, so we perform the opposite operation - divide b,

ganeshie8 · Answer

$a  = b(\frac{1}{c} - \frac{1}{d})$

divide b both sides,

$\frac{a}{b} =  \frac{1}{c} - \frac{1}{d}$

anonymous · Answer

then I need to add 1/d to both sides

ganeshie8 · Answer

perfect !

anonymous · Answer

I just dont know what to do when I am left with 1/c

ganeshie8 · Answer

$\frac{a}{b} + \frac{1}{d} = \frac{1}{c}$

ganeshie8 · Answer

$\frac{1}{\frac{a}{b} + \frac{1}{d}} \ = c$

ganeshie8 · Answer

if you wanto simplify, u may simplify left hand side, by taking LCD...

ganeshie8 · Answer

but we are done wid what we asked, we isolated the c !!!!!!

anonymous · Answer

but i think i need to simplify the left side.

ganeshie8 · Answer

good :) simplify it by multiplying numerator & denominator wid the LCD = bd

anonymous · Answer

LCD, like the drugs? I dont know what it is.

ganeshie8 · Answer

$\frac{bd*1}{bd*(\frac{a}{b} + \frac{1}{d})}  \  = c $

$\frac{bd}{ad+b}  \  = c $

ganeshie8 · Answer

lol, LCD = Least Common Denominator

anonymous · Answer

oh. that makes more sense. I was concerned that I was going to have to do drugs to pass my math classes

ganeshie8 · Answer

first thing pops up in mind for LCD  is,  Liquid Crystal Display

hw come u get into drugs and all hmm

anonymous · Answer

Im clean! I promise!

ganeshie8 · Answer

lol you're funny ;p

ganeshie8 · Answer

good luck wid ur math exams :)

anonymous · Answer

It was on some online homework and I just got the answer back and it said I didnt have to simplify the fractions. so 1/(a/b+1/d) would have worked. If only I knew to begin with :/

anonymous · Answer

Thanks for your help

ganeshie8 · Answer

lol its okay yw !