Thread: rational equations

When a = and c =

How can i find b?

Originally Posted by ADY

When a = and c =

How can i find b?

Plug in the given values:



Move the constants to the RHS of the equation:



Thus

Originally Posted by ADY

(a + b) / bc = 1 / c
ac + bc = ab
ab - bc = ac
b(a - c) = ac
b = ac / (a - c)

Ya'll ok now ?

Originally Posted by Wilmer

(a + b) / bc = 1 / c
ac + bc = ab
ab - bc = ac
b(a - c) = ac
b = ac / (a - c)

Ya'll ok now ?

I don't want to pick at you but shouldn't this line

(a + b) / bc = 1 / c

read

(a + b) / ab = 1 / c

Originally Posted by earboth

I don't want to pick at you but shouldn't this line
(a + b) / bc = 1 / c
read
(a + b) / ab = 1 / c

Yes, typo...thanks Mr E