Question 389491
Let x=numerator
Then x+2=denominator
So our equation to solve is:
(x-1)/(x+2-1)=1/2 simplifying we have
(x-1)/(x+1)=1/2  now multiply each side by 2(x+1)
2(x-1)=x+1
2x-2=x+1 subtract x from and add 2 to each side:
2x-x-2+2=x-x+1+2 collect like terms
x=3
CK
(3-1)/(3+1)=1/2
2/4=1/2
1/2=1/2

Hope this helps---ptaylor