How to solve this A.P. problem | Mathematics | Page 1

urban kettle Jan 23, 2025, 12:21 PM

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foggy acornBOT Jan 23, 2025, 12:21 PM

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tulip token Jan 23, 2025, 12:24 PM

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my neck 🥲

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what progress have you done on the question? @urban kettle

urban kettle Jan 23, 2025, 12:35 PM

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I got 2a+9d=-30 for the first equation

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After that I don't knwo

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What do you do after that?

signal junco Jan 23, 2025, 1:39 PM

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For the next 10 terms you could take the first term to be as (a+10d) and then use the for mula

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Or you could consider n/2(a+l) and take the last term for first 10 terms as (a+9d) and (a+19d) for the next 10

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Or with expanding the terms like a+a+d.. but it would be too long and tedious

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The answer should come as around d=-4 and a=3

urban kettle Jan 23, 2025, 2:12 PM

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Thanks a lot man!!

#How to solve this A.P. problem