Posted by Zachary on .
Rearrange this equation to isolate c.
a=b((1/c)(1d))

Math 
JJ,
a = b (dc)/cd
Multiply cd times both sides then distribute the b.
acd = bdbc
add bc to both sides:
acd+bc = bd
factor out the c
c(ad+b) = bd
Divide both sides by (ad+b) to solve for c.