Math, asked by jacklineongayo9, 6 days ago

the sum of the first 13terms of an arithmetic progression is13 and sum of the first 5 terms is 25. find the sum of the first 21 you terms?

Answers

Answered by xSoyaibImtiazAhmedx

0

★ ANSWER IN THE ATTACHMENT.

★MAKE IT BRAINLIEST PLEASE ❤️ YOU

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Answered by rahulchandragiri6

0

Your answer is given above

Where n = given term

a = first term

d = common difference.

The answer is 63.

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