Question

4,x-1,8 are the A.P then find the value of x​

Answer 1

Answer:

here's your answer

Step-by-step explanation:

a=4

d=a4-a3

8-(-1)

8+1={9}

a2=a+d

=4+9

= 13

therefore x value = 9

Answer 2

Answer:

7

Step-by-step explanation:

a=4, d=x-1-4=x-5, n=3, l=8

l= a+(n-1)d

8=4+2*(x-5)

8-4=2x-10

4+10=2x

14=2x

x=14/2

x=7

Easy peasy...