in an AP if d=-4 and 7th=4 find the first term
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7th term = a + 6d
=> 4 = a + 6(-4)
=> 4 = a - 24
=> 4 + 24 = a
=> 28 = a
Hence, first term is 28
=> 4 = a + 6(-4)
=> 4 = a - 24
=> 4 + 24 = a
=> 28 = a
Hence, first term is 28
rozyjuyal:
how the 7th term is 4 not 7
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