Question

If 3+x,x-3,-2x+12 are in A.P., then value of x is:​

Answer 1

x+2,2x,2x+3 are in A.P.

⇒(2x)−(x+2)=(2x+3)−(2x)

2x−x−2=2x+3−2x

x−2=3

∴x=5