Question

the fourth term of an ap is 11. the sum of the fifth and seventh terms of the ap is 34. find the common difference..

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Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

common difference is 3

Step-by-step explanation:

a+3d=11....eqn.1

(a+4d)+(a+6d)=34

2a+10d=37

so a+5d=17.......eqn2

solving both eqn you will get d=3