in an apartment, if the common difference d=-4and the seventh term a7 is 4,then find the first term.
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Answered by
1
a7 = a+6d
4=a+6×-4
4=a-24
28=a
a=28
4=a+6×-4
4=a-24
28=a
a=28
Answered by
1
The answer is 28.
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answer is 28
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