Question:
If the numbers x − 2, 4x − 1 and 5x + 2 are in A.P. find the value of x.
Solution:
It is given that the numbers
We have to find the value of x
We know that if x, y and z are in A.P, then
$y-x=z-y$
$2 y=x+z$
Therefore for the given numbers
$2(4 x-1)=x-2+5 x+2$
$8 x-2=6 x$
$8 x-6 x=2$
$2 x=2$
Hence $x=1$