Question

lif t17=54, t9=30 find 'a' and 'd'​

Answer 1

Answer:

Hii user,

Step-by-step explanation:

t17 = a+16d ---(1)

t9=a+8d

now,

t9=30 so,

30= a+8d

a= 30-8d ---(2)

now putting value of a in eqn 1

t17 = a+16d

54 = 30-8d

54-30= 8d

24=8d

d= 3

putting value of d in eqn 2

a=30-8d

a= 30-8×3

a= 30-24

a= 6

Hence, a=6 & d= 3

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