D=-4,a7=4 find a

1.	D=-4,a7=4 find a
Answer» Given :d=-4 and a7=4 Sol- a7=a+6d 4=a+6(-4) 4=a+(-24)therefor a=-24-4 a=-28 Given: d=-4 and a7 =4Therefore we can writea7=a+6d-4=a+6×4-4=a+24a=-24-4=-28Hence we get a=-28

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