Question

Find the value of a, b in an A.P
5,a,b,9½

Answer 1

Step-by-step explanation:

9 1/2-b=a-5

a+b=14 1/2 a=14 1/2-b

first term=5

d= 14 1/2-b-a

a2=5+141/2-b-a

a+a=5+14.5-b

2a=19.5-b

2a+b