English, asked by sureshmaru1223, 2 months ago

If t9=23 and a=7 then find value of d=?

Answers

Answered by shardakapse63

18

Answer :-

3x - 7x = x + 9

3n - n = 7 + 9

2x = 16

x = 16/2

therefore. { x = 8 }

may be this answer help uhh

Answered by YashpalSinghRathore

10

tn= a + (n-1) d

23 = 7 + (9-1) d

23 = 7 + 8d

23 - 7 = 8d

8d = 16

d = 16/2

d = 2

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