Answer:
a + 3d = 93 and a + 7d = 65
Then, 4d = - 28
d = -7
So, a = 93 +21 = 114
Therefore, nth term is 114 + (n- 1)(-7) = 121 - 7n.
First three terms are 114, 107 ,100
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Answer:
a + 3d = 93 and a + 7d = 65
Then, 4d = - 28
d = -7
So, a = 93 +21 = 114
Therefore, nth term is 114 + (n- 1)(-7) = 121 - 7n.
First three terms are 114, 107 ,100