Question 277247
4/x+2= ?/(x+2)(x+1) 

To solve for ? we can eliminate the denominator on the right by multiplying both sides by (x+2)*(x+1):

Then we have:

[4/(x+2)]*[(x+2)*(x+1)] = ?

4*[(x+2)/x+2)]*(x+1) =
4*1*(x+1) =
4*(x+1) = ?